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ILLINOIS  BIOLOGICAL 
MONOGRAPHS 


Vol.  II  April,  1916  No.  4 


Editorial  Committee 


Stephen  Alfred  For^bes  William  Trelease 

Henry  Baldwin  Ward 


Published  under  the 

Auspices  of  the  Graduate  School  by 

THE  University  of  Illinois 


Copyright,  191 5 

By  the  University  of  Illinois 

Distributed  June  30,  1916 


THE  GENUS  MELIOLA 
IN  PORTO  RICO 

Including  Descriptions  of  Sixty-two  New  Species 

and  Varieties  and  a   Synopsis   of  all 

Known  Porto  Rican  Forms. 

WITH  FIVE   PLATES 


BY 


FRANK  LINCOLN  STEVENS 


Contribution   from   the 
Botanical  Laboratories  of  the  University  of  Illinois 


TABLE  OF  CONTENTS 

Introduction  Page    7 

Key  to  Sections _ 10 

Section  A 10 

Section    B 12 

Section   C 20 

Section   D 32 

Section   E 34 

Section    F „ 52 

Section   G 54 

Section    H 57 

Host  List  66 

Explanation  of  Plates _ 75 

Alphabetical  list  of  Species 85 


475]  MELIOLA  IN  PORTO  RICO  — STEVENS 


THE  GENUS  MELIOLA  IN  PORTO  RICO 

The  genus  Meliola  while  not  the  largest  or  the  most  important  genus 
of  parasitic  fungi  in  Porto  Rico  possesses  features  of  special  interest. 
As  at  present  understood  from  the  monograph  of  Gaillard,  it  constitutes 
a  well  defined,  clearly  marked  genus  with  a  fairly  large  number  of  species. 
In  the  Sylloge  Fungorum  of  Saccardo  234  species  and  varieties  are 
included;  63  additional  species  have  since  been  described,  making  297 
species  and  varieties  recognized  prior  to  the  present  paper.  The  fungi 
are  especially  beautiful  in  contour,  superficial  with  small  penetrating 
haustoria.  Usually  their  effect  upon  the  host  is  slight  though  in  some 
instances  well  marked  pathological  effects  are  discernible.  They  are 
among  the  most  common  genera  of  leaf  inhabiting  fungi  in  Porto  Rico, 
and  may  be  found  in  all  parts  of  the  island  in  great  abundance,  usually, 
though  not  always,  causing  conspicuous  black  blotches  upon  one  or 
both  surfaces  of  the  leaf,  more  rarely  upon  stems. 

The  present  study  is  based  almost  entirely  upon  collections  made 
by  the  writer  during  the  years  1912,  1913,  and  1915.  Cognizance  is  ta- 
ken also  of  the  collections  of  Heller  reported  by  Earle.  Nearly  every 
species  noted  by  earlier  writers  is  included  in  my  own  collections  and  is 
usually  reported  upon  several  hosts  and  from  numerous  localities. 

A  narrative  of  the  two  collecting  trips  which  furnished  those  speci- 
mens is  given  in  the  Journal  of  the  New  York  Botanical  Garden,  June 
1916. 

A  reference  to  the  time  involved  has  been  made  by  Arthur.^ 

The  specimens,  types,  cotypes,  etc.  of  this  collection  have  been  depos- 
ited as  indicated  by  Miss  E.  Young.-  Other  articles  based  on  these  col- 
lections have  been  published  by  P.  Garman,'  E.  Young,*  J.  C.  Arthur.' 


^Mycologia  7:168,  1915,  and  8:20,  1916. 

2Mycologia  7:143,   1915. 

sMycologia  7  -.333,  1915. 

■*Mycologia  8:42,  1916. 

'Mycologia  7:168,  227,  315,  1915;  8:16,  1916. 


8  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [476 

The  following  summary  will  serve  to  give  a  general  idea  of  the  scope 
of  the  present  report : 

Total  number  of  collections  of  Meliola 729 

Number  of  species  of  Meliola 95 

"  varieties  of  Meliola 6 

' '  new  species  of  Meliola 56 

"  new  varieties  of  Meliola.. _ 6 

**  species  and  varieties  of  Meliola  new  to  Porto  Rico 83 

"  species   and   varieties   of  Meliola   previously   reported 

from  Porto  Rico 20 

"  hosts   171 

"      "      previously  reported _ 25 

"      "      new  to  Porto  Rico  for  Meliola 146 

"  host  families 53 

"      "          '*        previously  reported 18 

"      "          "        new  to  Porto  Rico  for  Meliola 35 

In  grouping  the  genus  into  sections  and  in  keying  the  species  I  have 
in  the  main  followed  the  plan  adopted  by  Gaillard,  laying  principal 
emphasis  upon  the  setae,  perithecial  and  mycelial,  next  upon  the  char- 
acter of  the  setal  tips,  and  basing  final  specific  distinction  upon  more 
minute  characters  of  mycelium,  capitate  hyphopodia,  spore,  etc.  It  is 
to  be  noted  that  in  Porto  Rico  occur  none  of  the  species  with  clavate, 
long,  8-spored  asci.  All  are  of  the  short-ascus  form  with  two  to  four 
spores  per  ascus.  In  certain  species  there  is  constancy  as  regards  each 
character,  in  other  species  there  is  large  variation.  Young  colonies  may 
be  devoid  of  mycelial  setae  though  they  may  be  abundant  in  old  colonies 
(M.  earlii).  Certain  species  sometimes  though  not  always  present  perithe- 
cial setae  (M.  solani).  Several  species  show  large  variation  as  to  setal 
tips,  the  tips  being  sometimes  simple  and  acute,  sometimes  slightly 
forked,  (M.  mangiferae,  M.  ipamoeae),  even  much  forked,  and  all  aris- 
ing from  the  same  mycelium;  or  the  forking  may  show  a  great  range 
in  character  and  complexity  (M.  furcata).  In  other  species  the  setal 
tips  may  show  great  constancy,  e.g.,  M.  cucurhitacearum.  Taken  all  in 
all  the  problem  of  specific  limitation  is  much  the  same  as  is  met  in  the 
Erysiphaeeae,  with  very  similar  characters  to  use. 

The  problem  of  classification  is  rendered  especially  difficult  by  the 
fact  that  the  Meliolas  are  very  often  overgrown  by  parasites  which  con- 
fuse the  picture  and  also  often  prevent  the  formation  of  perithecia,  and, 
I  believe,  strongly  influence  the  character  of  the  mycelium  and  hypho- 
podia, i.e.,  the  mycelium  and  hyphopodia  are  often  made  more  crooked 
and  more  angular,  or  to  appear  so,  by  the  parasite  that  is  growing  upon 
them.     I  believe  also  that  the  character  of  the  mycelium  is  strongly 


477]  MELIOLA  IN  PORTO  RICO  — STEVENS  9 

influenced  by  the  nature  of  the  leaf  upon  which  it  grows,  that  it  will 
be  more  nearly  straight  on  a  straight-veined,  smooth  leaf  than  upon  a 
crooked-veined,  hairy  one. 

The  question  of  limits  of  variation  in  mycelium,  hyphopodia  and 
setae  is  a  difficult  one  and  finally  will  be  solved  only  by  inoculation 
experiments  and  observations  upon  live  material. 

I  have  left  out  of  all  consideration  the  so-called  conidial  stage,  Hel- 
minthosporium,  Podosporium,  etc.,  because  these  structures  appear  use- 
less in  taxonomy  and,  moreover,  because  I  am  far  from  convinced  that 
they  really  are  conidial  stages  of  the  Meliolas.  The  mucronate  hyphopodia 
are  curious  structures  but  they  are  so  variable  on  the  same  mycelium 
that  they  possess  little  value  in  classification. 

The  question  of  biologic  specialization  has  been  but  little  studied 
in  this  genus.  My  field  observation,  however,  strongly  supports  the  idea 
that  there  is  large  specialization.  For  example,  Cissus  vines  heavily 
coated  with  M.  merrillii  are  found  with  their  branches  interlacing 
with  plants  susceptible  to  Meliola  but  the  Cissus  Meliola  does  not  invade 
the  other  plants.  The  Meliolas  on  Dieffenbachia  and  Philodendron,  mem- 
bers of  the  same  family,  to  the  naked  eye  appear  much  alike  and  under 
the  microscope  are  kin,  yet  there  is  no  field  evidence  that  one  goes  to 
the  other's  host.  In  some  cases  forms  morphologically  indistinguishable 
are  found  upon  large  numbers  of  species  or  genera  in  the  same  family 
(notably  M.  hicornis  on  the  Leguminosae),  whether  these  forms  are  inter- 
inoculable  or  not  is  not  known. 

It  is  possible  that  were  type  specimens  of  all  the  old  species  at  hand 
for  comparison  some  of  the  new  species  might  be  found  to  agree  with 
them,  but  from  the  descriptions  and  figures  available  such  does  not  seem 
to  be  the  case.  It  is  more  probable  that  some  of  the  collections  which 
I  have  referred  to  old  species,  relying  upon  printed  descriptions  and 
without  comparison  with  types,  in  reality  may  be  new  species.  It  seems 
best  for  present  purposes,  however,  to  avoid  undue  multiplication  of 
species  and  I  believe  that  my  error  lies  more  largely  in  conservatism  than 
in  the  creation  of  new  species. 

It  is  extremely  difficult  to  interpret  many  of  the  descriptions  that 
have  been  written,  some  are  too  brief  and  leave  out  many  essentials, 
others  describe  setae  but  do  not  state  whether  they  are  perithecial  or 
mycelial  and  the  supposition  is  strong  that  there  have  been  many  cases 
where  the  colony  character  has  been  taken  from  a  colony  parasitized  by 
some  other  fungus,  e.g.,  many  of  the  Meliolas  described  as  having  a 
crustose  colony  are  probably  Meliolas  parasitized  by  a  Microthyriaceous 
fungus. 

The  final  word  as  to  the  specific  relation  cannot  be  said  but  with 
the  large  number  of  collections  at  my  disposal,  on  many  hosts,  and  the 


10  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [478 

opportunity  thus  afforded  of  making  close  comparisons  between  these 
forms,  I  feel  that  I  have  at  least  approximated  the  truth. 

Especially  worthy  of  note  is  the  occurrence  in  Porto  Rico  of  sev- 
eral tropical  species  on  closely  related  hosts,  originally  described  from 
the  other  side  of  the  world,  notably  M.  merrUUi,  on  Sicyos  from  the 
Philippines,  M.  clavnlata  on  Ipomoea  and  M.  cyperi  on  Sedges  from 
Africa. 

It  should  be  remembered  that  Meliola  is  preeminently  a  tropical 
genus,  almost  exclusively  so,  the  occurrence  therefore  of  these  species 
in  Porto  Rico,  Africa  and  the  Philippines  with  no  present  tropical  land 
connection  between  these  countries  implies,  either  that  the  Meliolas  have 
in  the  past  been  of  different  climatic  range  or  that  they  are  the  residual 
flora  of  previously  connected  tropical  lands. 

I  wish  to  acknowledge  the  very  great  assistance  that  I  have  received 
from  Doctor  N.  L.  Britton  and  Mr.  Percy  Wilson  in  the  determination 
of  Phanerogamic  hosts,  from  Miss  Slosson,  the  Pteridophytes,  and  from 
Mrs.  Agnes  Chase  the  Grasses. 

Meliola,  Key  to  Sections 
Spores  3-septate,  mycelial  setae  none  section  A,  p.  10 

Spores  4-septate 
Mycelial  setae  none 

Perithecium  with  no  setae  or  appendages 
Perithecium  with  setae  or  with  appendages 
Mycelial  setae  present 

Perithecium  with  setae  or  appendages 
Perithecium  with  no  setae  or  appendages 
Mycelial  setae  simple,  straight 
Mycelial  setae  simple,  uncinate 
Mycelial  setae  usually  simple,   some- 
times forked 
Mycelial  setae  forked 

Section  A 

Spores  3-septate,  mycelial  setae  none 

The  members  of  this  section  are  clearly  marked  by  the  3-septate 
spores,  a  character  that  seems  to  be  invariable,  and  the  three  species 
found  in  Porto  Rico  are  clearly  limited  as  is  shown  in  the  following  key. 

Key  to  Species  of  Section  A 

Perithecium  with  larvaeform  appendages  M.  puiggarii    No.  1 

Perithecium  with  no  larvaeform  appendages 

Perithecial  setae  absent  M.  manca         No.  2 

Perithecial  setae  present,  M.  guignardi  No.  3 


section  B, 

P- 

12 

section  C, 

P- 

20 

section  D, 

P- 

32 

section  E, 

p. 

34 

section  F, 

P- 

52 

section  G, 

P- 

54 

section  H, 

P- 

57 

479]  MELIOLA  IN  PORTO  RICO  — STEVENS  11 

There  is  quite  a  striking  similarity  between  the  hyphopodia  upon 
the  three  species  with  3-septate  spores.  They  are  of  the  same  general 
size  and  contour,  large  and  irregular. 

1.    M.  PuiGGARH  Speg. 

Fungi  Puiggariani.    No.  228. 
On  Rubus  sp.     Fig.  1.^ 

El  Alto  de  la  Bandera,  July  15,  '15,  8650,  July  14,  '15,  8270. 
Maricao,  July  20,  '15,  8892. 

No  other  species  has  been  reported  upon  the  Rosaceae.  The  form 
agrees  well  with  the  descriptions  and  with  a  type  specimen,  No.  2722, 
received  from  Dr.  Spegazzini,  though  the  perithecial  appendages  are 
nearly  twice  as  long  as  stated.    See  also  under  M.  manca. 

2.    Meliola  manca  Ell.  and  Mart. 

Amer.  Nat.  17 :  1284,  1883,  and  Jour.  Myc.  1 :  148,  1885. 
On  Myrica  cerifera  L.     Fig.  2. 

Manati,  Nov.  23,  '13,  5289,  Nov.  25,  '13,  5250.  A  collection  by 
Heller  near  Catano,  Jan.  17,  '03. 

In  **Le  Genre  Meliola",  Gaillard  unites  under  M.  manca  the  three 
species  M.  manca,  M.  sanguinea,  and  M.  puiggarii,  giving  a  new  de- 
scription for  M.  manca.  This  new  description  mentions  larvaeform, 
perithecial  appendages.  The  original  description  of  M.  manca  by  Ellis 
and  Martin  mentions  no  such  appendages,  but  does  specifically  state 
that  there  are  no  perithecial  appendages.  My  own  material  of  two 
collections  is  ample.  I  have  studied  it  carefully,  also  a  specimen  of  the 
Heller  collection  and  a  specimen  collected  by  Martin  and  distributed  by 
Ellis  as  N.A.F.  No.  1292,  all  of  these  upon  the  same  host.  These  speci- 
mens all  agree  perfectly  and  agree  with  the  original  description.  They 
do  not  have  larvaeform  perithecial  appendages  and  therefore  do  not 
conform  with  the  description  as  given  by  Gaillard. 

The  specimens  of  Meliola  which  I  have  found  on  Rubus  agree  well 
with  the  description  of  M.  puiggarii.  They  have  abundant  larvaeform 
appendages  and  cannot  be  placed  under  M.  manca.  Moreover,  both  the 
general  characters  of  the  mycelium  and  of  the  capitate  hyphopodia 
separate  the  forms  on  Rubus  from  those  of  Myrcia,  the  hyphopodia  on 
Rubus  being  much  larger  and  more  irregular  in  shape.  I  am  forced 
therefore,  to  regard  the  description  given  by  Gaillard  for  M.  manca  as 


^Figures  accompanying  this  article  are  noted  in  connection  with  the  host  from 
which  they  were  made. 


12  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [480 

erroneous  and  that  of  Ellis  and  Martin  as  correct  and  to  recognize  M. 
puiggarii  on  Rubus,  as  an  entirely  different  species. 

In  the  head  cell  of  each  capitate  hyphopodium  there  is  a  small,  clear 
spot,  about  3/i  in  diameter,  which  appears  to  be  a  hole  in  the  lower 
side  of  the  hj^phopodium,  and  if  so  probably  indicates  the  breaking  off 
of  a  haustorium.  Similar  marks  are  found  upon  the  capitate  hyphopo- 
dia  in  many  species  but  they  are  not  usually  so  conspicuous  as  in  this 
species. 

3.     M.  GUIGNABDI  Gaill. 

Bull.  Soc.  Myc.  de  France  8:  176,  1892. 
On  Turpinia  panniculata  Vent.     Fig.  3. 

Maricao,  July  19,  '15,  8922,  Sept.  20,  '13,  3685. 

This  differs  somewhat  from  the  type  as  described  by  Gaillard  in  its 
smaller  perithecia,  about  ZOOfi,  shorter  perithecial  setae,  about  100- 
150/*,  and  smaller  ascospores,  54  x  15fi. 

It  is  of.  special  interest  since  it  is  the  only  species  known  which 
has  a  3-septate  spore,  without  mycelial  setae,  and  with  perithecial  setae. 
The  hyphopodia  are  verj^  characteristic  and  agree  well  with  the  figures 
of  Gaillard.    The  type  of  the  species  was  from  Ecuador  on  host  unknown. 

SECTION  B 

Spores  4-septate,  no  setae  or  appendages 

This  section  corresponds  to  the  Section  I  C.  a.  of  Gaillard  without 
the  forms  with  perithecial  appendages.  As  represented  in  Porto  Rico 
it  presents  many  puzzling  aspects,  occurring  on  a  large  number  of 
hosts  of  many  families  and  presenting  variations  which  though  easy 
to  recognize  are  difficult  to  define  with  accuracy.  The  spores  in  all  are 
quite  uniform  and  neither  in  size,  shape  nor  constriction  lend  themselves 
to  description.  There  are  no  perithecial  or  mycelial  setae.  Therefore 
the  perithecium,  the  mycelium  and  hyphopodia  must  furnish  the  dis- 
tinctions. Moreover,  such  variations  as  do  occur  in  the  perithecium  are 
minor  and  difficult  to  state  definitely.  For  this  reason  many  students 
have  referred  such  forms  on  numerous  hosts  to  M.  glabra.  A  study  of 
the  Porto  Rican  material  both  in  the  field  and  under  the  microscope 
convinces  me  that  many  of  these  forms  which  may  agree  in  spores  and 
perithecia  and  which  show  variation  in  general  habit  in  mycelium  and 
hyphopodia  are  really  distinct  species.  Plants  heavily  infected  with 
one  of  these  forms  of  Meliola  may  be  found  growing  among  plants  sus- 
ceptible to  another  form,  but  which  are  entirely  devoid  of  Meliola. 

In  the  treatment  of  the  Porto  Rican  species  I  have  removed  from 
M.  glabra  all  which  it  seems  very  evident  are  not  co-specific  with  the 


481]  MELIOLA  IN  PORTO  RICO  — STEVENS  13 

specimen  No.  3849  of  Rabenhorst's  Fungi  Europaei.  I  have  described 
some  Meliolas  as  varieties  though  I  am  inclined  to  believe  that  in  several 
instances  they  will  eventually  prove  to  be  really  as  distinct  specifically 
as  many  other  forms  that  are  recognized  as  species. 

Key  to  Species  of  Section  B 

Mycelium  very  dense,  close  woven 
Spore  cells  about  equal  in  size 
Head  cell  oval  or  slightly  angular  M.  glabra  No.  4 

Head  cell  angular  to  lobed  M.  sepulta  No.  5 

Spore  cells  unequal  M,  irregularis  No.  6 

Mycelium  not  close  woven 

Capitate  hyphopodia  mostly  opposite  M.  solani  No.  7 

Capitate  hyphopodia  not  opposite 
Mycelium  more  or  less  crooked 
Mycelium  wavy 

Capitate  hyphopodia  oval  M.  hyptidicola  No.  8 

Capitate  hyphopodia  globular 

Perithecia  very  rough  M.  cyclopoda  No.  9 

Perithecia  not  very  rough  M.  aibonitensis  No.  10 

Mycelium  very  crooked 

Capitate  hyphopodia  angular  M.  perseae  No.  11 

Mycelium  usually  straight  or  nearly  so 
Capitate  hyphopodia  entire 

Oval,  small,  17  x  Ifi  M.  lagunculariae  No.  12 

Elliptical,  large,  21  x  10)U  M.  longipoda  No.  13 

Pyriform  M.  melastomacearum  No.  14 

Capitate  hyphopodia  entire  or  lobed  M.  glabroides  No.  15 
Capitate  hyphopodia  lobed  M.  triloba  No.  16 

4.    Meliola  glabra  Berk,  and  Curt. 

Cuban  Fungi  N.  883  (pro  parte). 

Gaillard,  Le  Genre  Meliola :  59 :  1892.      ~ 
On  Hypelate  trifoliata  Sw. 

Mona  Island,  collected  by  Britton,  Cowles  and  Hess,  Feb.  1914. 

Two  other  specimens  were  also  sent  to  me  by  Dr.  Britton  from  the 
Bronx  Herbarium,  one  from  the  Bahamas,  No.  8246,  one  from  Cuba, 
No.  2171,  collected  in  1860-1864. 

On  Drypetes  sps. 

Rio  Tanama,  July  6,  '15,  7885. 

This  specimen  shows  an  unusually  rough,  irregular  mycelium  and 
capitate  hyphopodia. 


14  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [482 

If  we  accept  for  M.  glabra  the  description  given  by  Gaillard  and 
as  belonging  to  it  the  specimen  distributed  by  Rabenhorst  and  Winter 
as  No.  3849,  Fungi  Europaei  (See  Fig.  4)  on  Barbacenia  purpurea  we 
must  think  of  this  as  a  form  with  a  dense,  closely  matted  mycelium  with 
mycelial  threads  coursing  more  or  less  parallel.  This  is  typically  the 
condition  of  the  Meliola  on  Hypelate. 

4a.    Meliola  glabra  var.  psychotriae  var.  nov. 

There  is  a  remarkable  variation  here  in  that  many  of  the  colonies 
are  very  small,  of  rapidly  branching,  closely  matted  mycelium,  while 
others  are  of  looser  structure  and  larger  in  area. 

The  small,  closely  matted  colonies  approach  quite  closely  to  the  type 
while  the  loose  colonies  deviate  from  it  widely. 
On  Palicourea  domingensis  (Jacq.)  DC. 

Florida  Adentro,  July  1,  '15,  7649  (type). 
On  Psychotria  hertiana  P. 

El  Alto  de  la  Bandera,  July  15,  '15,  8673,  8654,    8278,    8710,    8566, 
8646.    El  Gigante,  July  17,  '15,  8528. 
On  Psychotria  puhescens  Sw. 

Arecibo  -  Lares  Road,  June  21,  '15,  7281.    Vega  Baja,  July  2,  '15, 
7732,  July  2,  '15,  7741.    Dos  Bocas,  below  Utuado,  July  8,  '15,  8032. 
On  Psychotria  grandis  Sw. 

Mayaguez,  June  25,  '15,  7487. 
On  Psychotria  sp.   Quebradillas,  Nov.  22,  '13,  5032. 

Vega  Baja,  Mch.  1,  '13,  516. 
On  Palicourea  1 

Mayaguez,  May  1,  '13,  1070  b.  Jan.  30,  '13,  316.  Vega  Baja,  Feb. 
20,  '13,  468.  Dos  Bocas,  below  Utuado,  Dec.  30,  '13,  6650.  El  Gigante, 
Dec.  15,  '13,  5944.  Ponce,  Nov.  8,  '13,  4367.  Maricao,  July  20,  '15, 
8875. 

On  Coccocypselum  repens  Sw. 

Maricao,  July  20,  '15,  8961. 

5.    Meliola  sepulta  Pat.  in  herb. 

On  Avicennia  nitida  Jacq.     Fig.  5. 

Two  specimens  were  collected  by  Heller,  Nos.  390,  Jan.  31,  '89, 
6416,  Jan.  17,  1903 ;  both  of  these  in  the  Bronx  Garden  bear  the  above 
name,  but  description  has  not  yet  been  published.  The  following  de- 
scription is  made  from  a  fragment  of  specimen  No.  390  which  becomes 
the  type: 

Colonies  circular,  1-7  mm.  in  diam.,  black,  dense,  mostly  hypophyl- 
lous,  mycelium  closely  branched,  producing  a  closely  woven  mat.    Capi- 


483]  MELIOLA  IN  PORTO  RICO  — STEVENS  IS 

tate  hyphopodia  24  x  14/*,  opposite  or  alternate,  head  cell  angular  or 
often  distinctly  lobed,  stalk  cell  10/*  long.  Mycelial  and  perithecial 
setae  none.  Perithecia  abundant  in  older  portions  of  the  colony,  ITOju,  in 
diam.,  slightly  rough.  Asci  evanescent,  short,  thick,  2-4  spored.  Spores,. 
52  X  20/A,  strongly  constricted,  ends  obtuse. 

6.    Meliola  irregularis  sp.  nov. 

Colonies  amphigenous,  irregular,  1-3  mm.  in  diam.,  black.  My- 
celium forming  a  very  close  network  of  threads  which  branch  irregu- 
larly, Tfx  in  diameter.  Hyphae  often  so  close  as  to  lie  in  contact  form- 
ing a  mat. 

Capitate  hyphopodia  alternate  or  irregular,  crowded,  head  cell  pyri- 
form,  somewhat  irregular,  17  x  10/x,  the  basal  cell  3-7/*  long,  Mucronate- 
hyphopodia  alternate  or  opposite,  bottle-shaped,  narrow,  20/a  long.  My- 
celial setae  none.     Perithecial  setae  none. 

Perithecia  200/a,  rough  with  conic  protuberances  about  17/x  high.. 
Asci  2-spored,  soon  evanescent;  ascospores  4-septate,  brown,  constricted^ 
obtuse,  41  X  14/A,  often  irregular  in  shape,  one  end  pointed,  one  or  more 
cells  larger  than  the  others,  or  with  septa  set  obliquely,  occasionally  with 
an  aberrant  number  of  septa. 
On  Hygrophila  hrasiliensis,  (Spreng.)  Lind.     Fig.  6. 

Rio  Piedras,  Aug.  11,  '15,  9283  (type). 

This  species  in  character  of  perithecium  resembles  M.  glabra  but 
in  spores  and  mycelium  it  is  quite  different. 

7.    Meliola  solani  sp.  nov. 

Colonies  amphigenous,  irregularly  circular,  2-4  mm.  in  diam.  My- 
celium black,  forming  a  close  network,  7/*  in  diameter,  branches 
irregular. 

Capitate  hypophodia  small,  mostly  opposite,  not  crowded,  2  per 
cell,  cells  about  17/*  long,  head  cell  pyriform  or  globular,  10  x  8/*, 
the  basal  cell  short.  Mucronate  hyphopodia  few,  alternate  or  oppo- 
site, bottle-shaped,  14  x  7/*.  Mycelial  setae  none.  Perithecial  setae  few 
or  wanting,  straight  or  slightly  curved,  125  x  7/i,  tip  obtuse,  dark. 

Perithecia  150-180/*.  Asci  soon  evanescent;  ascospores  4-septate^ 
brown,  very  slightly  constricted,  obtuse,  37  x  14/t. 

On  Solanum  jamaicense  Mill.     Fig.  7. 

Monte  de  Oro,  Dec.  3,  13,  5750  (type). 

The  chief,  distinguishing  character  is  the  small,  nearly  globular 
capitate  hyphopodia  which  are  usually  opposite. 


16  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [484 

8.    IVIeliola  HYPTmicoLA  sp.  nov. 

Colonies  amphigenous,  chiefly  h3T)ophyllous,  irregular,  diffuse. 
Hycelium  black,  forming  a  loose  network,  7/t  in  diameter,  branches 
irregular. 

Capitate  hypophodia  small,  alternate  or  irregular,  not  crowded,  1 
per  cell,  cells  about  20/*  long,  head  cell  ovoid,  14-17  x  9/x,  the  basal  cell 
3-6/1  long.  ^lucronate  hyphopodia  few,  bottle-shaped.  Perithecial  setae 
none.    Mycelial  setae  none. 

Perithecia  lOO-140/i,  slightly  rough.  Asci  soon  evanescent;  asco- 
spores  4-septate,  brown,  very  slightly  constricted,  obtuse,  31-34  x  10-13/*. 
On  Eyptis  lantanifolia  Poit. 

Las  Marias,  July  10,  '15,  8130  (type). 
On  Eyptis  capitate  Jacq.     Fig.  8. 

El  Gigante,  July  16,  '15,  8526. 
On  Eyptis  pectinata  (L.)  Poit. 

Dos  Bocas,  below  Utuado,  July  7,  '15,  7981.    Maricao,  July  19,  '15, 
S791. 
On  Eyptis  sps. 

Monte  de  Oro,  Dec.  13,  '13,  5760. 

9.    Meliola  cyclopoda  sp.  nov. 

Colonies  epiphyllous,  circular,  1-5  mm.  in  diam.  Mycelium  black, 
forming  a  loose  network,  7/t  in  diameter,  branches  mostly  opposite. 

Capitate  hj-phopodia  small,  alternate,  not  crowded,  1  per  cell,  cells 
20  to  35/1  long,  head  cell  nearly  globular,  14  x  14/i,  the  basal  cell  3-7/4 
long.  Mucronate  hyphopodia  opposite,  bottle-shaped,  10-18  x  6/i.  Peri- 
thecial setae  none.    Mycelial  setae  none. 

Perithecia  135-170/1  in  diam.,  rough  with  conic  protuberances.  Asci 
soon   evanescent;   ascospores   4-septate,  brown,  slightly  constricted,  ob- 
tuse, 38  X  14/1. 
On  Pseudelephantopus  spicatus  Juss.    Fig.  9. 

Vega  Baja,  July  2,  '15,  7733  <type),  7871. 

10.    Meliola  aibonttensis  sp.  nov. 

Colonies  amphigenous,  black,  circular  to  irregular,  1-3  mm.  in  diam. 
Mycelium  rather  closely  woven,  crooked,  waving,  branching  irregular. 

Capitate  hj'phopodia  alternate  or  unilateral,  rather  close  together, 
often  17/t,  head  cell  nearly  globular,  lO-15/i  in  diam.,  stalk  cell 
short.  Mucronate  hyphopodia  scattered,  bottle-shaped  to  conic.  My- 
celial and  perithecial  setae  none. 

Perithecia  flattened  when  young  and  somewhat  so  when  mature, 


485]  MELIOLA  IN  PORTO  RICO  — STEVENS  17 

surrounded   by  an  areola  of   radiating  mycelium,  slightly  rough,  140/* 
in  diam.,  spores  4-septate,  41  x  17/x,  obtuse,  slightly  constricted. 
On  unknown  dicotyledonous  host,  Aibonito,  July  16,  '15,  8470. 

11.    Meliola  peeseae  sp.  nov. 

Colonies  hypophyllous,  irregular,  black,  2-5  mm.  in  diam.  My- 
celium very  crooked,  branching  irregularly,  opposite,  alternate  or  dicho- 
tomous,  very  dark,  dfx.  thick. 

Capitate  hyphopodia  alternate  or  irregular,  head  cell  oval  to  pyri- 
form,  cuneiform  or  angular.  Mucronate  hyphopodia  alternate,  variable. 
Mycelial  setae  none.    Perithecial  setae  none. 

Perithecium    100-200/x    in    diam.,  black,    very    rough    with    large 
conical  projections.     Asci  evanescent.     Spores  4-septate,  strongly  con- 
stricted, dark  brown,  ends  rounded,  44  x  24/i,. 
On  Persea  gratissima  Gaertn.     Fig.  10. 

Las  Marias,  July  10,  '15,  8212  (type). 

Characterized  chiefly  by  absence  of  setae  and  its  very  irregular 
mycelium;  near  to  M.  calva  but  differing  from  it  in  its  rough  peri- 
thecium. 

12.    Meliola  lagunculabiae  Earle 

Muhlenbergia  1 :  11,  1901. 
On  Laguncularia  racemosa  (L.)  Gaertn. 

Mayaguez,  June  27,  '15,  7505,  April  20,  '13,  1364.  Martin  Pena, 
Aug.  11,  '15,  9331.    Joynda,  331,  '13,  363. 

The  type  was  collected  by  Heller  on  the  same  host  Jan.  1900,  No. 
4361a.  Another  collection  was  made  by  Heller  at  Catano,  Jan.  7,  '03, 
No.  6417. 

13.    Meliola  longipoda  GaiU. 

BuU.  Soc.  Myc.  de.  Fr.  8 :  172,  1892. 
On  Cordia  sp. 

Mayaguez  Mesa,  June  25,  '15,  7472. 
On  Cordia  nitida  Vahl.     Fig.  11. 

Martin  Pena,  Aug.  11,  '15,  9329. 

The  hyphopodia  in  these  specimens  seem  quite  variable.  In  No. 
7472,  they  are  long,  especially  long  in  the  stalk  cell.  The  capitate 
hyphopodia  do  not  agree  precisely  with  tHe  figures  of  Gaillard.  They 
are  more  commonly  obtuse  or  even  truncated ;  nor  are  they  quite  as  long 
as  is  called  for  in  Gaillard 's  description.  Still,  in  view  of  the  evident 
variability  of  these  structures  in  this  species,  it  seems  best  to  regard  my 
■collections  as  M.  longipoda. 


18  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [486 

On  Tournefortia  hirsutissima  L, 

Eio  Arecibo,  K.  64.7,  July  8,  '15,  7780.  Dos  Bocas,  below  Utuado, 
July  7,  '15,  7965.    Quebradillas,  Nov.  22,  '13,  5001. 

These  specimens  agree  closely  with  the  descriptions  and  drawings 
of  Gaillard. 
On  Anona  montana  Macf. 

Mayaguez,  June  29,  '15,  7561. 

14.    Meliola  melastomacearum  Speg. 

Fung.  Puigg.,  N.  232. 
On  Clidemia  hirta  (L.)  D.  Don.     Fig.  12. 

Maricao,  July  20,  '15,  8956.     Mayaguez,  June  24,   '15,  7394.    Las 
Marias,  July  10,  '15,  8123.    Dos  Bocas,  below  Utuado,  July  8,  '15,  8089, 
Aug.  '15,  9479. 
On  Clidemia  strigillosa  (Sw.)  P.  DC. 

Trujillo  Alto,  Aug.  15,  '15,  9423.    Lajas,  June  17,  '15,  7159. 
On  Miconia  laevigata  (L.)  P.  DC. 

Dos  Bocas,  below  Utuado,  July  8,  '15,  8085.    Rio  Arecibo,  K.  64.7, 
July  8,  '15,  7797.    El  Alto  de  la  Bandera,  July  15,  '15,  8662. 
On  Miconia  racemosa  (Aubl.)  P.  DC. 

Mayaguez,  June  24,  '15,  7414,  7399,  7389,  June  16,  '15,  7636,  June 
14,  '15,  7037.    Lajas,  June  17,  '15,  7145. 

The  colonies  of  this  fungus  are  very  inconspicuous,  so  much  so  that 
in  probably  no  case  was  the  collection  made  for  the  Meliola;  that  is,  in 
nearly  every  case  the  leaves  were  collected  for  other  fungi  upon  them, 
chiefly  Microthyriaceae,  and  it  was  only  when  the  specimen  came  under 
the  compound  microscope  that  the  presence  of  the  Meliola  was  recog- 
nized. Indeed  after  it  is  known  that  the  Meliola  is  present  it  is  often 
very  difficult  to  locate  the  colonies  amid  the  large  numbers  of  other  fungi 
which  are  usually  found  upon  these  hosts.  The  fungus  agrees  fully  with 
authentic  specimens  received  from  Dr.  Spegazzini. 

15.    Meliola  glabroides  sp.  nov. 

Colonies  amphigenous,  mostly  epiphyllous,  irregular,  circular,  1-8 
mm.  in  diam.  Mycelium  black,  forming  a  loose  network,  7/x  in  diam- 
eter, branches  mostly  opposite,  often  at  right  angles. 

Capitate  hyphopodia  alternate,  not  crowded,  1  per  cell,  cells  about 
30/x  long,  head  cell  ovoid,  entire  or  angular,  17  x  14/a,  the  basal  cell  7ju 
long.  Mucronate  hyphopodia  few,  alternate  or  opposite,  bottle-shaped, 
16-18  X  Sjx.    Perithecial  setae  none.    Mycelial  setae  none. 

Perithecia  100-140/i,,  rough  with  rounded  protuberances.  Asci  soon 
evanescent ;  ascospores  4-septate,  brown,  very  slightly  cpnstricted,  obtuse, 
41  X  17(1. 


487]  MELIOLA  IN  PORTO  RICO  — STEVENS  19 

On  Piper  adunctum,  L.  Fig.  13. 

Indiera  Fria,  Maricao,  Oct.  8,  '13,  3371  (type).  El  Alto  de 
la  Bandera,  July  15,  '15,  9039,  8633.  Las  Marias,  July  10,  '15,  9603, 
8133.  Dos  Bocas,  below  Utuado,  July  8,  '15,  8064.  Vega  Baja,  July  2, 
'15,  7724.  Mayaguez  Mesa,  June  29,  "15,  7563.  Aiiasco,  Oct.  12,  '13, 
3582.  Maricao,  Sept.  20,  '13,  3647,  Nov.  8,  '13,  4802.  Arecibo-Lares  road, 
June  21,  '15,  7297.  Aibonito,  July  16,  '15,  8471.  Lares,  Nov.  22,  '13, 
4930.    Martin  Pena,  Aug.  11,  '15,  9334.     Trujillo  Alto,  Aug.  16,  '15, 

9472.    Utuado,  Nov.  8,  '13,  4393. 

A  specimen  in  the  Bronx  Gardens,  Number  4359  a.  on  Piper  adunc- 
tum was  collected  at  Mayaguez,  P.  R.,  Jan.  23,  1900,  and  determined  as 
M.  glabra.  Of  the  various  species  of  Meliola  found  on  Piper  it  can  be 
readily  distinguished  by  the  absence  of  setae  and  by  the  prominent 
roughening  of  the  perithecium.  The  species  is  very  common  on  its  wide- 
spread host.  No  injury  to  the  leaves  is  apparent. 
On  Nectandra  patens  (Sw.)  Griseb. 

Mayaguez  Mesa,  June  25,  '15,  7466,  June  15,  '15,  7081,  June  29,  '15, 
7595.  Maricao,  Sept.  20,  '13,  4852,  July  20,  8873,  8874,  8867,  July  19, 
'15,  8750,  July  20,  '15,  8973. 

On  Simaruhra  tulae  Urb. 

Mayaguez  Mesa,  June  29,  '15,  7588.  Mayaguez,  June  15,  '15,  7061. 
El  Gigante,  near  Adjuntas,  July  16,  '15,  8516. 

On  Sauvagesia  erecta  L. 

El  Alto  de  la  Bandera,  July  15,  '15,  8641.  Las  Marias,  July  10,  '15, 
8129.    Maricao,  July  19,  '15,  8944,  8777. 

A  specimen  determined  by  Earle  as  M.  glabra  is  in  the  Bronx  Gar- 
dens.   The  form  on  this  host  uniformly  shows  shorter,  more  nearly  glob- 
ular capitate  hyphopodia  than  are  found  in  the  type. 
On  Stachytarpheta  cayennensis  (L.  CI.  Rich)  Vahl. 

Trujillo  Alto,  Aug.  15,  '15,  9405.    Sabana  Liana,  Aug.  13,  '15,  9380. 

I  would  add  here  also  specimen  No.  6402,  Pueblo  Viejo,  of  Heller, 
Jan.  13,  1903,  which  is  in  the  Bronx  collection  under  the  name  M.  cook- 
eana,  an  evident  error  of  determination.  This  form,  like  the  last,  also 
has  short  head  cells.  Its  mycelium  is  also  less  straight  than  in  other 
specimens  of  this  species. 
On  Solanum  rugosum  Dunal. 

Las  Marias,  July  10,  '15,  8121. 

On  Solanum  persicifolium  Dunal. 

Quebradillas,  Nov.  22,  '13,  5019. 

This  has  short  hyphopodia,  similar  to  those  of  the  two  last  men- 
tioned. 


20  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [488 

15a.    MeTjTOLa  glabkoides,  var.  schlegeliae  var.  nov. 

This  differs  from  the  type  in  its  more  angular  capitate  hyphopodia 
and  a  some  what  closer  colony  structure. 
On  Schlegelia  sps. 

El  Alto  de  la  Bandera,  July  14,  '15,  8289  (type),  8274. 

16.    Meliola  triloba  Wint. 

Hedw.  25:  95,  1886. 
On  PUea  parietaria  (L.)  Bl.  Fig.  14. 

Arecibo-Lares  Road,  June  21,  '15,  7232.  Dos  Bocas,  below  Utuado, 
July  8,  '15,  1038.    Rio  Arecibo,  K.  64.7,  July  8,  '15,  7804. 

Also  reported  by  Earle  as  No.  558  of  Heller's  collection,  1899,  This 
and  M.  earlii  are  often  associated  upon  the  same  leaves  but  the  present 
species  is  usually  epiphyllous. 

'    SECTION  C. 

Spores  4-septate,  no  mycelial  setae,  perithecia  with  setae  or  append- 
ages.^ 

E^EY  TO  Species  op  Section  C 
Appendages  larvaeform 

Capitate  hyphopodia  distant,  27/* 
Head  cell  angular  or  entire 

Appendages  long  M.  compositarum  No.  17 

"  short  M.  tuberculata  No.  18 

Head  cell  very  irregular  M.  calophyUi  No.  19. 

Capitate  hyphopodia  close,  17/t  M,  arecibensis  No.  20 

Appendages  setiform 

Mycelium  very    scant,       (Distance    between 
mycelial  threads  more  than  ten  times 
the  thickness  of  the  threads) 
Head  cells  not  nsnally  globular  M.  miconieicola  No.  21 

Head  cells  mostly  globular  M.  tenuissima  No.  22 

Mycelium  not  very  scant 

Capitate  hyphopodia  crowded  M.  parathesicola  No.  23 

Capitate  hyphopodia  not  crowded 
Tips  of  setae  much  curved 
Tips  often  hooked,  uncinate 
Mycelium  wavy  M.  toruloidea  No.  24 

Mycelium  nearly  straight  M.  comocladiae  No.  25 

Tips  often  coUed  or  spiral  M.  tortuosa  No.  26 


^M.  solani,  see  p.  15,  might  sometimes  fall  within  this  section. 


489]  MELIOLA  IN  PORTO  RICO  — STEVENS  21 

Tips  of  setae  slightly  curved  or  not  at  all 
Setae  very  thin,  4/x  M.  chamaeeristieola 

Setae  thicker  No.  27 

Branches  quit^  uniformly  at  right 
angles 
Head  cell  not  angular  M.  rectangularis  No.  28 

Head  cell  angular  M.  chieoccae  No.  29. 

Branches  not  at  right  angles 
Main  mycelial  threads  running 

parallel  M.  pteridicola  No.  30 

Main  mycelial  threads  not  parallel 

Setae  thick,  lOfi,  heavy  walled      M.  moUeriana  No.  31 
Not  as  above 
Setae  long,  125/x 

Spores  37  x  14/a  M.  cupaniae  No.  32 

Spores  50xl4/A  M.  ocoteae  No.  33 

Setae  not  so  long 

Colony  very  dense,  threads 

agglutinated  M.  compacta  No.  34 

Colony  dense,  threads  not 

agglutinated  M.  mieoniae  No.  35 

Colony  not  dense 

Head  cell  nearly  globular  M.  triumfettae  No.  36 
Head  cell  not  globular      M.  maricaensis  No.  37 

17.    Meliola  compositarum  Earle 

Bull.  N.  Y.  Bot.  Gard.  3 :  306,  1905. 
On  Eupatorium  odoratum  L,  Fig.  15 

Dos  Bocas,  below  Utuado,  July  8,  15,  7977,  8055,  Dec.  16,  '13,  6056y 
6001,  Dee.  30,  '13,  6574.  El  Gigante,  July  10,  '15,  8537.  Arecibo-Lares 
Road,  June  6,  21,  '15,  7309.  El  Miradero,  Aug.  4,  '15,  9168.  Florida 
Adentro,  July  1,  '15,  7689.  Las  Marias,  July  10,  '15,  8155.  Rio  Tan- 
ama,  July  6,  '15,  7825.  Maricao,  July  19,  '15,  8798.  Aibonito,  July  16, 
'15,  8466.  Rosario,  Nov.  27,  '13,  3771.  Utuado,  Nov.  8,  '13,  4683.  May- 
aguez,  Oct.  31,  '13,  3898.  Yauco,  Oct.  3,  '13,  3241.  Catano,  Nov.  6,  '13, 
4185.    Jajome  Alto,  Dec.  3,  '13,  5756. 

Also  collected  by  Heller,  No.  141,  Rio  Piedras,  and  No.  6185  on  the 
same  host,  Adjuntas;  and  on  Willoughbaea.  These  all  agree  with 
Earle 's  cotype  No.  6185.  In  some  instances,  especially  in  No.  5756, 
there  is  some  variation  in  habit  and  the  appendages  are  considerably 
larger  than  mentioned  in  the  description. 


22  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [490 

17a.    Meliola  compositabum  Earle  var.  portoricensis  var.  nov. 

This  form  agrees  with  the  type  in  peritheeial  characters  but  its  my- 
celium is  much  more  coarse,  also  its  appendages  are  larger  and  more  ir- 
regular. 
On  Eupatorium  portoricense  Urb.  Pig.  16. 

Vega  Baja,  Nov.  5,  '13,  4301   (type).     Dos  Bocas,  below  Utuado, 
Dec.  30,  '13,  6861,  6034,  6031,  6866,  6830,  6557,  Dec.  16,  '13,  6003,  6032, 
6031,  July  8,  '15,  7953,  8102.    San  Sebastian,  Nov.  22,  '13,  5192.  Vega 
Baja,  July  2,  '15,  7723.    Arecibo-Lares  Road,  June  20,  '15,  7320. 
On  Eupatorium  dolicholepis  Urb. 
Rio  Tanama,  July  6,  '15,  7893. 

On  all  hosts  it  is  usually  much  overgrown  with  one  or  more  para- 
sites. 

18.    Meliola  tuberculata  sp.  nov. 

Colonies  amphigenous,  more  common  above,  densely  black,  1-3 
mm.  in  diam.,  circular.    Mycelium  rather  dense,  quite  crooked. 

Capitate  hj-phopodia  alternate,  varying  from  simple  and  ovate  to 
irregularly  lobed,  usually  30/x  or  more  apart.  Mucronate  hyphopo- 
dia  few,  narrowly  conic.  Mycelial  setae  none.  Peritheeial  setae  none. 
Peritheeial  appendages  conic,  51  x  27/x,  very  numerous,  nearly  everj^  sur- 
face cell  of  the  perithecium  being  prolonged  into  an  appendage. 

Perithecia  160/^1  in  diam.  Asci  evanescent.  Spores  4-septate,  38  x 
14/i  obtuse,  slightly  constricted. 

On  unknown  dicotyledonous  plant,  Vega  Baja,  July  2,  '15,  No. 
7742,  (tj-pe). 

This  species  is  clearly  distinct  from  all  other  Porto  Rican  species 
studied,  especially  in  the  appendages  to  the  perithecium,  the  crooked 
mycelium,  and  the  variable  hyphopodia. 

19.    Meliola  calophyuli  sp.  nov. 

Colonies  mainly  epiphyllous,  irregular,  diffuse,  1-10  mm.  in  diam. 
Mycelium  forming  a  loose  network  of  threads  which  branch  irregularly, 
7/Li  in  diameter. 

Capitate  hyphopodia  alternate  or  irregular,  not  crowded,  about  35/* 
apart,  head  cell  ovoid  or  pyriform,  often  very  angular  and  irregular, 
24  xl7/Li,  the  basal  cell  14/i  long  or  less.  Mucronate  hyphopodia  very  ir- 
regular in  arrangement,  bottle-shaped,  narrow,  about  20/i  long.  Myce- 
lial setae  none.  Peritheeial  setae  very  numerous,  larvaeform,  curved. 
Tip  obtuse,  51  x  17/4,  translucent. 

Perithecia  220/i,  ostiolar  region  thin.  Asci  soon  evanescent;  as- 
cospores  4-septate,  brown,  very  strongly  constricted,  obtuse,  44-47  x  17/i. 


491]  MELIOLA  IN  PORTO  RICO  — STEVENS-  23 

On  Calophyllum  calaba  Jacq.  Fig.  17. 

Mayaguez,  June  15,  '15,  7059  (type).  Mayaguez,  June  25,  '15, 
7489a..  Vega  Baja,  Nov.  13,  4310. 

The  species  is  remarkable  for  the  very  numerous  larvaeform  appen- 
dages, it  appearing  as  though  nearly  every  superficial  cell  of  the  peri- 
thecium  develops  into  an  appendage.  The  appendages  are  closely 
marked  with  transverse  striae  which  simulate  septa.  The  capitate  hy- 
phopodia  are  also  characteristic.  It  resembles  M.  inermis,  but  distin- 
guished from  it  by  the  smaller  spores  and  more  angular  hyphopodia. 

20.  Meliola  arecibensis  sp.  nov. 

Colonies  hypophyllous,  irregular,  1-3  mm.  in  diam.  Mycelium  form- 
ing a  rather  close  net  work  of  threads  which  are  slightly  crooked  and 
branch  either  opposite  or  alternate,  about  6/x  in  diameter.  Capitate 
hyphopodia  alternate,  one  per  cell,  cells  about  10-17/x  long,  head  cell 
ovoid  to  cuneate  or  very  irregular,  20x10/*,  the  basal  cell  varying 
from  short  to  quite  long,  20/i,.  Mucronate  hyphopodia  abundant,  us- 
ually opposite,  bottle-shaped,  narrow,  20/a  long.  Mycelial  setae  none. 
Perithecial  appendages  larvaeform,  few,  4-8,.  short,  about  85/*,  20/t  thick, 
curved  to  crooked,  translucent,  darker  at  tip.  Perithecia  200/*,  rough, 
with  rounded  protuberances,  ostiole  none.  Asci  soon  evanescent ;  asco- 
spores  4-septate,  dark  brown,  very  strongly  constricted,  obtuse,  44-51  x 
20/*. 
OnAcalypha  hisetosa  Bert.  Fig.  18. 

Vega  Baja,  Feb.  21,  '13,  3658,  (type).  Dos  Bocas,  below  Utuado, 
Dec.  30,  '13,  6547. 

This  species  collected  only  once  is  very  striking.  Possessing  no 
setae  either  perithecial  or  mycelial  and  having  the  larvaeform  chitinous 
appendages  it  falls  within  a  class  of  but  few  members.  It  is  also  remark- 
able for  the  great  variation  in  form  and  size  of  both  kinds  of  hyphopo- 
dia, a  variation  far  greater  than  I  have  seen  on  any  other  species.  It  is 
clearly  seperated  from  M.  acalyphae  by  its  chitinous  appendages  and 
character  of  the  hyphopodia. 

21.  Meliola  miconieicola  sp.  nov. 

Colonies  hypophyllous,  irregular,  diffuse,  5-20  mm.  in  diam.  Myce- 
lium forming  a  very  loose  network  of  slightly  wavy  threads  with 
branches  mostly  opposite,  6/*  in  diameter. 

Capitate  hyphopodia  small,  alternate  or  irregular,  very  distant, 
about  75/t  apart,  head  cell  ovoid  or  pyriform,  sometimes  slightly 
irregular,  17  x  14/*,  the  basal  cell  4-10/*  long.  Mucronate  hyphopo- 
dia few  and  scattered,  mostly  opposite,  bottle-shaped,  narrow,  crooked, 


24  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [492 

about  17)11  long.  Mycelial  setae  none.  Perithecial  setae  few,  about 
3-10,  arising  from  the  base  of  the  perithecium,  straight  or  slightly  curved. 
Tip  obtuse,  30-85  x  7/a,  dark.  Perithecia  135/a,  rough  with  rounded 
protuberances.  Asci  soon  evanescent;  ascospores  4-septate,  brown,  con- 
stricted, obtuse,  35-38  xll/A. 
On  Miconia  sintenisii  Cogn.  Fig.  19. 

El  Alto  de  la  Bandera,  July  15,  '15,  8639  (type). 

This  Meliola  is  striking  on  account  of  its  sparse  mycelium  with 
very  distant  hyphopodia. 

22.    Meliola  tenuissima  sp.  nov. 

Fungus  amphigenous,  more  abundant  above,  colonies  extremely 
thin,  invisible  to  the  naked  eye,  consisting  of  a  loose  network  of  wavy 
threads,  7fi  in  diameter.  There  is  usually  a  distinct  bend  at  each 
septum. 

Capitate  hyphopodia  small,  alternate,  distant,  head  cell  globular, 
ovoid  or  pyriform,  not  angular,  IO/a  in  diam,,  the  basal  cell  about  Six  long. 
Mucronate  hyphopodia  few,  alternate  or  opposite,  bottle-shaped,  20/* 
long.  Mycelial  setae  none.  Perithecial  setae  few,  about  3-4,  straight  or 
bent,  or  even  uncinate  at  tip,  about  lOO/t  long,  6fi  thick.  Tip  obtuse, 
sometimes  swollen. 

Perithecia  170/a,  slightly  rough.    Asci  soon  evanescent;  ascospores 
4-septate,  brown,  not  constricted,  obtuse,  34-37  x  14-15/x. 
On  Gouania  lupuloides  (L.)  Urb. 

Yauco,  Oct.  3,  13,  3142  (type).    Villa  Alba,  Jan.  3,  '13,  96. 

This  species  is  quite  unique  in  the  extreme  sparseness  of  the  my- 
celium. 

23.    Meliola  parathesicola  sp.  nov. 

Colonies  hypophyllous,  irregularly  circular,  punctiform,  1-2  mm.  in 
diam.  Mycelium  brown,  forming  a  very  close  mat,  threads  8/x  in  diam- 
eter, branching  irregularly. 

Capitate  hyphopodia  alternate  or  irregular,  very  crowded,  usually 
in  contact  with  adjacent  hyphopodia,  head  cell  ovoid  to  nearly  globular 
or  slightly  angular,  20  x  14/x,  the  basal  cell  S-lfx  long.  Mucronate 
hyphopodia  few  and  scattered,  alternate  or  opposite,  bottle-shaped,  20  x 
7fi.  Mycelial  setae  none.  Perithecial  setae  few,  1-5,  arising  basally, 
straight,  about  90  x  7/li,  tip  obtuse,  dark  throughout. 

Perithecia  135-150/*,  rough,  with  rather  large  conic  projections. 
Asci  soon  evanescent,  ascospores  4-septate,  brown,  cylindrical  to  ellip- 
tical, slightly  constricted,  obtuse,  48  x  20/*. 


493]  MELIOLA  IN  PORTO  RICO  — STEVENS  25 

On  Parathesis  serrulata  (Sw.)  Mez.    Fig.  20. 

Las  Marias,  July  10,  '15,  8192  (type),  8504.  Maricao,  July  19,  '15, 
8947,  Sept.  20,  '13,  3634.    Areeibo-Lares  Road,  June  21,  '15,  7286. 

In  colony  and  general  characters  it  resembles  M.  mayapaeicola,  but 
differs  in  setae  and  in  shape  of  capitate  hyphopodia. 

24.  Meliola  toruloidea  sp.  nov. 

Colonies  amphigenous,  more  abundant  below,  circular,  1-4  mm,  in 
diam.  Mycelium  black,  forming  rather  close  network  of  threads; 
branches  opposite  or  alternate,  7/u,  in  diameter,  slightly  wavy. 

Capitate  hyphopodia  alternate,  not  crowded,  one  per  cell,  cells 
about  20/1  long,  head  cell  pyriform,  20  x  14/^.,  the  basal  cell  very  short, 
5-6/1.  Mucronate  hypophodia  opposite,  bottle-shaped.  Mycelial  setae 
none.  Perithecial  setae  few  to  many,  often  30-40  per  perithecium, 
distributed  over  its  surface,  strongly  uncinate  or  spirally  coiled,  about 
70/A  long,  7-8/x  thick,  black.  Young  perithecia  not  radiate,  ITO/i,  slightly 
rough,  with  rounded  protuberances.  Asci  soon  evanescent;  ascospores 
4-septate,  light  brown,  constricted,  obtuse,  34  x  16/t. 
On  Cassia  quhiquadrangulata  L.  CI.  Rich.     Fig.  21. 

Jajome  Alto,  July  17,  '15,  8394  (type).  Maricao,  July  20,  '15, 
8980,  Jan.  10,  '13,  206.  Aibonito,  Nov.  5,  '13,  4015,  July  16,  '15,  8468. 
On  Inga  laurina  (Sw.)  Willd. 

Las  Marias,  July  7,  10,  '15,  8135. 

25.  Meliola  comocladiae  sp.  nov. 

Colonies  amphigenous,  more  abundant  above,  punctiform,  1-3  mm. 
in  diam.  Mycelium  forming  a  network  of  threads;  branches  mostly 
opposite,  8/A  in  diameter. 

Capitate  hyphopodia  alternate,  not  crowded,  17-20/*  apart,  head 
cell  pyriform,  angular  and  often  bent,  20  x  14/t,  the  basal  cell  3-5/*. 
Mucronate  hyphopodia  alternate  or  opposite,  bottle-shaped.  Mycelial 
setae  none.  Perithecial  setae  few  or  numerous,  straight,  usually  with 
the  tip  uncinate  or  twisted,  115  x  8/x,  dark  throughout. 

Perithecia   lOO-150/i,  rough  with   conic   protuberances,  surrounded 
by  an  areola  of  radiating  mycelial  threads.     Asci  soon  evanescent;  4- 
spored,  ascospores  4-septate,  pale  brown,  very  slightly  constricted,  cylin- 
drical, obtuse,  41  X  17/*. 
On  Comocladia  glabra  Spreng.     Fig.  22. 

Rosario,  July  4,  '15,  9015  (type).  Mayaguez  Mesa,  June  25,  '15, 
7484,  June  15,  '15,  7056.    Maricao,  April  3,  '13,  760. 


26  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [494 

Ou  Spondias  monibin  L. 

Maricao,  April  3,  '13,  749. 

Perithecium  and  appendages  quite  similar  to  those  of  M.  tortuosa 
but  distinct  from  that  species  in  mycelial  characters. 

The  colonies  are  usually  densely  overgrown  with  parasites  which 
make  the  characters  difficult  to  determine.  The  absence  of  mycelial 
setae,  tlie  presence  of  the  long  perithecial  setae,  the  characteristic  radia- 
tion of  mycelium  from  the  base  of  the  perithecium,  and  the  character- 
istically angular  capitate  hyphopodia  are  each  distinctive. 

26.    Met  .TOLA  TORTUOSA  Wint. 

Gaillard,  Len  Genre  Meliola :  67,  1892. 
On  Piper  umhellatum  L,    Fig.  23. 

Utuado,  Nov.  8,  '13,  4414,  4664.  Indiera  Fria,  Maricao,  Oct.  8, 
'13,  3379.  Mayaguez,  Oct.  31,  '13,  3917,  Oct.  2,  '13,  3152.  Lares, 
Nov.  22,  '13,  4843,  442.  Anasco,  Oct.  12,  '13,  3578,  3507,  3508.  Monte 
Alegrillo,  Nov.  '13,  4721.  El  Gigante,  near  Adjuntas,  July  16,  '15, 
8560,  8497.  Florida  Adentro,  July  1,  '15,  7669,  7667,  7686.  J  a  j  o  m  e 
Alto,  Dec.  3,  '13,  5656,  5692.  Dos  Bocas,  below  Utuado,  July  8,  '15, 
8055,  8028,  8063.  Las  Marias,  July  10,  '15,  8146.  Rio  Tanama,  near 
Arecibo,  July  6,  '15,  7883,  7909,  7842,  7916,  78^,  7848.  Arecibo- 
Lares  Road,  July  7,  15,  7956,  June  2,  7316.  Maricao,  July  19,  '15,  8843. 
Rio  Arecibo,  July  8,  '15,  7777,  7792. 
On  Piper  medium,  Jacq. 

Vega  Baja,  July  2,  '15,  7752.    A  specimen  determined  by  Earle  is 
also  in  the  Bronx  collection. 
On  Piper  peltaium  L. 

Heller,  No.  6388,  Dec.  25,  1902,  Ponce.  The  type  was  on  leaves  of 
Piper  from  Brazil.    It  has  also  been  reported  upon  Dickensonia. 

This  form  agrees  with  the  descriptions  except  that  the  spores  are  a 
little  too  small,  37/i,  while  the  description  calls  for  49-54jn.  It  is  almost 
always  present  where  the  host  is  found,  often  covering  the  leaves  with 
its  black  coating. 

27.    IVIeliola  chamaecristicola  sp.  nov. 

Colonies  epiphyllous,  circular,  1-2  mm.  in  diam.  Mycelium  black, 
forming  a  rather  close  network,  7/x  in  diameter. 

Capitate  hj-phopodia  small,  alternate,  not  crowded,  1  per  cell,  eeUs 
about  14  to  17/x  long,  head  cell  ovoid,  14  x  10/a,  the  basal  cell  3/a  long. 
Mucronate  hyphopodia  alternate  or  opposite,  bottle-shaped,  14-16  x  6/x. 
Mycelial  setae  none.  Perithecial  setae  few,  straight  or  slightly  curved, 
80  X  4fi.    Tip  obtuse,  dark  throughout. 


495]  MELIOLA  IN  PORTO  RICO  — STEVENS  27 

Perithecia  ITO/i,  slightly  rough  with  rounded  protuberances.  Asci 
soon  evanescent;  ascospores  4-septate,  brown,  slightly  constricted,  ob- 
tuse, 34  X  14/A. 

On  Chamaecrista  granulata  (Urb.)  Britt.  Fig,  24. 

Mona  Island,  Dec.  20,  '13,  6113  (type). 

This  differs  from  all  other  forms  in  this  section  in  the  extremely 
thin  setae. 

28.    Meliola  rectangularis  sp.  nov. 

Colonies  epiphyllous,  circular  to  irregular,  1-10  mm.  in  diam.  Myce- 
lium forming  a  loose  network  of  threads  with  opposite  branches  which 
usually  form  right  angles  at  the  point  of  origin,  7/a  in  diameter. 

Capitate  hyphopodia  alternate,  about  25/*  apart,  cylindrical  to 
ovoid,  head  cell  17  x  lOfi,  scarcely  thicker  than  the  stalk  cell,  the  basal 
cell  S-5fi.  Mucronate  hyphopodia  alternate  or  opposite,  conical  to  nar- 
rowly bottle-shaped,  the  neck  narrow,.  20  x  6/*.  Mycelial  setae  none. 
Perithecial  setae  few,  short,  80/*  or  less,  opaque,  straight  or  slightly 
curved.     Tip  obtuse. 

Perithecia  170/t.  Asci  soon  evanescent;  ascospores  4-septate,  brown, 
slightly  constricted,  obtuse,  38  x  14/i. 

On  Coccolohis  laurifolia,  Jacq,  Fig.  25. 

Arecibo-Lares  Road,  June  21,  '15,  7292  (type). 

This  species  is  chiefly  characterized  by  its  poorly  differentiated  hy- 
phopodia and  the  right-angled  branching.  In  the  first  of  these  charac- 
ters it  approaches  M.  magnoliae  but  is  quite  distinct  from  that  form. 

On  Banisteria  laurifolia  L. 

Jayuya,  March  3,  '13,  1001.  Maricao,  Sept.  20,  '13,  4852.  Utuado, 
Nov.  8,  '13,  4392si,  4384.  Hormigueros,  K.  7,  June  23,  '15,  7358.  Maya- 
guez  Mesa,  June  29,  '15,  7564.    Martin  Pena,  Oct.  11,  '15,  9298. 

29.    Meliola  chiococcae,  sp.  nov. 

Colonies  epiphyllous,  irregular,  circular,  1-5  mm.  in  diam.  Myce- 
lium black,  forming  a  loose  network,  7/*  in  diameter,  branches  mostly 
opposite  and  at  right  angles. 

Capitate  hyphopodia  alternate,  not  crowded,  1  per  cell,  cells  about 
20/x  long,  head  cell  irregularly  globular,  angular,  17/i,  in  diameter,  the 
basal  cell  2-6/t  long.  Mucronate  hyphopodia  not  seen.  Mycelial  setae 
none.  Perithecial  setae  few,  straight  or  slightly  curved,  120  x  7/i,.  Tip 
obtuse,  dark  throughout. 

Perithecia  170/x,  slightly  rough.  Asci  soon  evanescent;  ascospores 
4-septate,  brown,  slightly  constricted,  obtuse,  37-41  x  14/t. 


28  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [496 

On  Chiococca  alba  (L.)  Hitch.  Fig.  26. 

Vega  Baja,  July  2,  15,  7743  (type).  Hormigueros,  June  23,  15, 
7325. 

30.    Meliola  pteridicola  sp.  nov. 

Colonies  amphigenous,  mainly  epipyUous,  1-6  mm.  in  diam.  Myce- 
lium forming  a  loose  network  of  threads  which  show  a  marked  tendency 
to  be  rectilinear  and  to  branch  at  right  angles,  quite  dark,  septation 
obscure. 

Capitate  hyphopodia  alternate  or  irregular,  not  crowded,  about 
30/i  apart,  ovoid  or  pyriform,  17  x  3/i,  apex  thickened,  the  basal  cell 
very  short.  Mucronate  hyphopodia  few  and  scattered  or  abundant  on 
certain  threads,  alternate  or  opposite,  smaU,  bottle-shaped,  the  neck 
narrow,  16-18/*  long  x  7/x  wide.  Mycelial  setae  none.  Perithecial  setae 
few,  about  3-10,  90  x  7/t,  dark,  straight,  or  slightly  curved  at  tip.  Tip 
obtuse. 

Perithecia  170/1,  rough,  with  rounded  protuberances  of  small,  6-10/i, 
subprominent  cells,  ostiole  none.  Asci  soon  evanescent;  ascospores  4- 
septate,  brown,  very  slightly  constricted,  obtuse,  35-40  x  4fi. 

On  Aneimia  adiantifolia  (L.)  Sw.  Fig.  27. 

Rio    Tanama,  near    Arecibo,  July    6,  7814  (type).     Quebradillas, 
June  23,  7269.    Dos  Bocas,  below  Utuado,  July  8,  8015. 
On  Aneimia  sp.  Dos  Bocas,  below  Utuado,  Dec.  30,  '13,  6594. 
On  Adiantum  latifolium  Lam. 

Las  Marias,  July  10,  8182.    Mayaguez,  June  24,  7418. 
On  Adiantum  sp.  aff.  A.  cristatum. 

Mayaguez  3,  July  19,  8795. 
On  Adiantum  sp. 

Mayaguez,  May  1,  '13,  1063. 

This  species  is  very  abundant,  forming  dense  dark  patches  upon 
the  leaves  and  petioles  though  no  signs  of  injury  to  the  host  are  evi- 
dent. The  fungus  falls  within  the  group  characterized  by  perithecial 
setae,  but  no  mycelial  setae,  a  group  with  but  few  representatives,  none 
of  which  can  be  confounded  with  this.  The  chief,  distinctive  character 
is  the  parallel  coursing  of  the  mycelium.  The  colonies  are  usually 
densely  parasitized  by  Helminthosporium,  Podosporium,  or  Asterina, 
each  giving  its  characteristic  effect  to  the  colony.  The  occurrence  of  both 
Helminthosporium  and  Podosporium  upon  this  Meliola  presents  a  strong 
argument,  as  to  the  parasitic  nature  of  these  forms  rather  than  their  be- 
ing a  stage  in  the  development  of  the  Meliola  itself. 


497]  MELIOLA  IN  PORTO  RICO  — STEVENS  29 

31.  Meliola  molleriana  Wint. 

Hedw.  25 :  98,  1886. 
On  Sida  urens  L. 

Aguada,  Nov.  22,  '13,  5090.  Mayaguez,  March  9,  '13,  483.  San 
German,  Dec.  8,  13,  4114,  June  27,  15,  7508.  Anasco,  Oct.  12,  13, 
3530.  Yauco,  Oct.  3,  13,  3243.  Catano,  Nov.  6,  13,  4184.  St.  Ana, 
Dec.  31,  13,  6693.  Arecibo-Lares  Road,  June  21,  15,  7310,  7239.  Dos 
Bocas,  below  Utuado,  July  8,  15,  8031,  8079.  Las  Marias,  July  10,  15, 
8209.  Eosario,  Aug.  4,  15,  9498,  9486.  El  Miradero,  Aug.  4,  15, 
9151. 

These  specimens  have  somewhat  shorter  and  thinner  perithecial  ap- 
pendages and  smaller  spores  than  the  description  calls  for.    The  fungus 
is  very  common,  almost  always  present  where  the  host  grows. 
On  Varro7iia  sp. 

Las  Marias,  July  10,  15,  8139.  El  Miradero,  Aug.  3,  15,  9133, 
Aug.  4,  15,  9164.  Mayaguez,  June  24,  15,  7412.  El  Alto  de  la  Ban- 
dera, July  14,  15,  8593. 

32.  Meliola  cupanme  sp.  nov. 

Colonies  epiphyllous,  irregular,  2-10  mm.  in  diam.,  confluent,  dif- 
fuse. Mycelium  forming  a  very  loose  network  of  threads,  branches 
mostly  opposite,  7/*  in  diameter. 

Capitate  hyphopodia  alternate,  distant,  37-70/a  apart,  head  cell  ovate 
to  cuneate,  smooth  or  angled,  often  truncate,  the  basal  cell  7/x  long. 
Mucronate  hyphopodia  opposite,  bottle-shaped  to  conic,  about  20/x  long. 
Mycelial  setae  none.  Perithecial  setae  3-12,  straight  or  curved.  Tip 
obtuse,  140  X  5fi,  dark. 

Perithecia  110-170jti,  rough,  with  rounded  protuberances.    Asci  soon 
evanescent;  ascospores  4-septate,  brown,  cylindrical,  slightly  constricted, 
obtuse,  37  x  14/*. 
On  Cupania  americana  L.  Fig.  28. 

El  Miradero,  near  Mayaguez,  Aug.  4,  15,  9143  (type),  9489,  Aug. 
11,  15,  9318.    Maricao,  July  19,  15,  8948.    Dos  Bocas,  near  Utuado, 
July  8,  15,  8080.    Quebradillas,  Nov.  22,  13,  4979. 
On  Cupania  sp.   Quebradillas  4779. 

The  distinctive  character  of  this  species  is  the  sparse  mycelium  and 
distant  hyphopodia  which  are  long  and  narrow. 

33.  Meliola  ocoteae  sp.  nov. 

Colonies  hypophyllous,  irregular,  5-10  mm.  in  diam.  Mycelium 
very  dark,  6/i  thick,  crooked,  loose,  branches  opposite  or  alternate. 


30  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [498 

Capitate  hyphopodia  alternate  or  unilateral,  about  50-80/x  apart, 
head  cell  ovoid  or  angular,  20  x  14/i.,  stalk  cell  10  x  14/u,  long.  Mucro- 
nate  hyphopodia  scant,  bottle-shaped.  Mycelial  setae  none.  Perithecial 
setae  numerous,  20/t,  straight  or  slightly  curved,  rigid,  dark,  about  85/a 
long,  apex  obtuse. 

Perithecia  170/t,  black.  Asci  evanescent.  Spores  4-septate,  dark, 
constricted,  somewhat  pointed  at  ends,  50  x  14/t. 

On  Ocotea  leucoxylon  (Sw.)  Mez. 

Jajome  Alto,  July  17,  '15,  8428  (type). 

Eesembling  M.  molleriana  but  differing  from  it  in  number,  length 
and  character  of  the  perithecial  hairs  and  in  mycelial  characters.  Usually 
densely  overgrown  with  conidial  forms. 

34.    Meliola  compacta  Earle 

Bull.  N.  Y.  Bot.  Gard.  3 :  306,  1905.  Collected  by  Heller,  No.  6217, 
"on  Crossopetalum  pollens." 

35.    Meliola  miconiae  sp.  nov. 

Colonies  epiphyllous,  circular,  2-5  mm.  in  diam.,  very  sharply  lim- 
ited, black,  smooth.  Mycelium  forming  a  close  network  of  threads 
mainly  with  opposite  branches,  Ifi  in  diameter. 

Capitate  hyphopodia  alternate  or  irregular,  not  crowded,  about  30/i 
apart,  head  cell  pyriform,  irregular  and  angular,  often  bent,  the  basal 
cell  7-9/1  long.  Mucronate  hyphopodia  not  seen.  Mycelial  setae  none. 
Perithecial  setae  very  inconspicuous,  few,  about  3-10,  straight  or 
slightly  curved,  or  coiled,  30-85  x  10/i.    Tip  obtuse. 

Perithecia  170-225/ti,  slightly  rough  with  conic  protuberances.  Asci 
four-spored,  soon  evanescent;  ascospores  4-septate,  brown,  slightly  con- 
stricted, obtuse,  44-47  x  17/i. 

On  Miconia  prasina  (Sw.)  P.  DC.  Fig.  29. 

Las  Piedras,  Aug.  12,  '15,  9366  (type).  Las  Marias,  July  10,  '15, 
8160. 

This  species  is  quite  distinct  from  the  two  others  found  in  Porto  Rico 
upon  Melastomataceae.  Its  very  distinct  colony  is  readily  recognizable 
by  the  naked  eye  as  a  distinct  form. 

36.    Meliola  tbiumfettae  sp.  nov. 

Colonies  epiphyllous,  punctiform,  1-3  mm.  in  diam.  Mycelium 
forming  a  close  network  of  crooked  threads  which  branch  irregularly, 
6/x  in  diameter. 

Capitate  hyphopodia  small,  alternate  or  irregular,  not  crowded, 


499]  MELIOLA  IN  PORTO  RICO  — STEVENS  31 

about  17-50/1  apart,  head  cell  globular  to  pyriform,  14/x  in  diam.,  the 
basal  cell  short.  Mucronate  hyphopodia  few  and  scattered,  alternate 
or  opposite,  bottle-shaped,  about  20  x  T/u,.  Mycelial  setae  none.  Peri- 
thecial  setae  few,  about  1-5,  somewhat  crooked,  70-85  x  6/x,  yellow, 
translucent.    Tip  obtuse. 

Perithecia  irregularly  globular,  85-140/a  in  diam.,  very  rough,  with 
conic  protuberances,  translucent.  Asci  soon  evanescent;  ascospores  4- 
septate,  brown,  constricted,  obtuse,  34-41  x  10-14/n. 

On  Triumfeita  semitrUoba  Jacq. 

Utuado,  Nov.  8,  '15,  4421  (type).  Indiera  Fria,  Oct.  8,  '13,  3482. 
On  Hibiscus  tiliaceus  L. 

Arecibo-Lares  Road,  June  21,  '15,  7249.  Maricao,  July  20,  '15,. 
8962.    Dos  Bocas,  below  Utuado,  July  8,  '15,  8073. 

The  specimens  on  Hibiscus  while  they  show  the  same  characteris- 
tic perithecia  and  hyphopodia,  are  somewhat  differentiated  as  to  the 
habit  of  the  mycelium,  which  is  less  crooked  and  produces  larger  colo- 
nies than  on  Triumfetta.  Perithecia!  setae  are  also  decidedly  more 
variable  in  number,  sometimes  entirely  lacking,  at  other  times  numerous. 

37.    Meliola  maricaensis  sp.  nov. 

Colonies  hypophyllous,  irregular,  sparse,  5-15  mm.  in  diam.,  conflu- 
ent. Mycelium  forming  a  very  loose  network  of  black  threads  Ifj.  in 
diameter,  branching  irregular. 

Capitate  hyphopodia  alternate  or  irregular,  distant,  about  30-70/t 
apart,  head  cell  ovoid  to  pyriform  and  regular,  or  subpyriform,  angular 
and  quite  irregular,  17  x  lOfx,  the  basal  cell  5-7/a  long.  Mucronate 
hyphopodia  alternate  or  opposite,  bottle-shaped,  16-18  x  l/x..  Mycelial 
setae  none.  Perithecial  setae  few,  about  3-10,  straight  or  slightly  curved 
at  tip,  100-150  X  7/x.,  dark.     Tip  obtuse. 

Perithecia  170/u.,  rough,  with  rounded  protuberances.  Asci  soon 
evanescent ;  ascospores  4-septate,  brown,  slightly  constricted,  obtuse,. 
48  X  20fi. 

On  Ilex  nitida  (Vahl)  Maxim. 

Maricao,  Oct.  20,  '13,  3679  (type),  3607,  April  4,  '13,  824. 

Close  to  M.  cupaniae  but  separable  from  it  by  the  shape  of  the  capi- 
tate hyphopodia. 


Setae  broadly  uncinate 

.     M. 

contorta  No.  38 

Setae  not  broadly  uncinate 

Spores  long  and  narrow,  48-51  x  7-9/oi 

M. 

mayaguesian&No. 

Spores  not  long  and  narrow 

Spores  apieulate 

M. 

circinans  No.  40 

Spores  not  apieulate 

M. 

cyperi  No.  41 

32  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [500 

SECTION  D 
Spores  4-septate,  mycelial  and  perithecial  setae  present. 
Key  to  Species  op  Section  D. 


39 


38.    Meliola  contorta  sp.  no  v. 

Colonies  amphigenous,  mainly  below,  irregularly  circular,  1-6  mm. 
in  diam.,  black.  Mycelium  forming  a  moderately  loose  network  of 
threads  with  branches  usually  opposite,  Ifi  in  diameter. 

Capitate  hyphopodia  large,  alternate,  abundant  but  not  crowded, 
one  to  each  cell  and  cells  about  35/x  long,  ovoid  or  elliptical,  head  cell 
17-10/i.,  apex  obtuse,  the  basal  cell  about  Ip.  long.  Mucronate  hypho- 
podia opposite,  alternate  or  scattered,  bottle-shaped,  the  neck  nar- 
row. Mycelial  setae  few,  scattered,  similar  to  the  perithecial  in  charac- 
ter. Perithecial  setae  variously  curved  or  uncinate  at  the  tip,  several 
from  the  base  of  each  perithecium.  About  150/i,  long,  10/x  thick;  apex 
variously  marked,  slightly  tapering,  with  numerous,  sharp,  lateral 
projections,  or  uncinate  with  roughenings,  or  short  bifid  with  the  branches 
cut  into  small,  sharp  teeth. 

Perithecia  140/a,  slightly  rough,  with  rounded  protuberances,  ostiole 
none.    Asci  soon  evanescent;  ascospores  4-septate,  brown,  very  slightly 
constricted,  obtuse,  34-37  x  lO/t. 
On  Piper  hispidum  Sw.  Fig,  30. 

Las  Marias,  July  11,  '15,  8225  (type). 

This  species  which  is  my  only  collection  of  Meliola  upon  the  host  is 
very  interesting.  It  belongs  in  that  section  of  the  genus  in  which  few 
species  are  found,  characterized  by  both  mycelial  and  perithecial  setae. 
The  setae  moreover,  are  unique  in  being  both  uncinate  and  forked  and 
toothed. 

39.    Meliola  mayaguesiana  sp.  nov. 

Colonies  amphigenous,  mostly  hypophyllous,  circular,  2-8  mm.  in 
diam.  Mycelium  black,  forming  a  rather  close  network,  7fi  in  diam- 
eter, branches  irregular,  quite  crooked,  tangled. 


501]  MELIOLA  IN  PORTO  RICO  — STEVENS  33 

Capitate  hyphopodia  small,  alternate,  not  crowded,  1  per  cell,  cells 
about  ^OfjL  long,  head  cell  ovoid  or  truncate,  apex  often  thickened,  17  x 
lOfi,  the  basal  cell  varying  from  very  short  to  Ifx  long.  Mucronate 
hyphopodia  few  and  scattered,  narrow,  alternate,  bottle-shaped,  27  x  7fi. 
Perithecial  setae  few,  about  3-10,  about  lOO/u,  long,  Ifx  thick,  black 
throughout,  contorted,  usually  spirally  twisted,  sometimes  coiled  into 
close  knots;  tips  obtuse.  Mycelial  setae  abundant,  straight  or  slightly 
curved,  very  long,  about  800/^,  9/x  thick,  dark  throughout,  simple. 

.     Perithecia     150/a,    rough     with     conic    protuberances.     Asci     2-4- 
spored ;  ascospores  4-septate,  pale  brown,  very  long  and  narrow,  slightly 
constricted,  obtuse,  48-51  x  7-9/1.. 
On  Palicourea  crocea  (Sw.)  Roem.  Fig.  31. 

Lajas,  June  17,  '15,  71^  (type),  June  17,  15,  7196.    Las  Marias, 
July  10,  '15,  8138,  8162. 
On  Palicourea  domingensis  (Jacq.)  DC. 

Piedras,  Aug.  12,  '15,  9320. 
On  Palicourea  riparia,  Benth, 

Mayaguez,  June  25,  '15,  7403,  7019. 

On  Palicourea  sp. 

Mayaguez,  Apr.  30,  '13,  979.  May  3,  '13,  1131. 

This  Meliola  is  remarkable  in  several  ways.  Possessing  both  peri- 
thecial and  mycelial  setae  it  falls  within  a  class  of  very  few  representa- 
tives indeed.  The  ascospores  too,  are  distinctly  unique,  being  much 
more  slender  than  those  of  any  other  Meliola  that  I  have  seen. 

40.    Meliola  circinans  Earle 

Bull.  N.  Y.  Bot.  Gard.  3 :  308,  1905. 
On  Mariscus  jamaicensis  (Crantz)  Britton. 

San  Juan,  Aug.  15,  '15,  9221,  Aug.  9,  '15,  9203.  Manati,  Nov.  25, 
'15,  5286. 

The  type  collection  was  made  by  Heller,  No.  6384,  on  Rynchospora 
aurea. 

Our  specimens  clearly  agree  with  the  type  of  Earle  especially  in 
the  possession  of  both  perithecial  and  mycelial  setae  of  different  lengths. 
The  capitate  hyphopodia  are  quite  variable  and  though  the  circinate 
forms  do  occur  I  would  not  attach  so  much  importance  to  this  character 
as  Earle  seems  to  do.  The  sub-apiculate  ascospores,  however,  are  quite 
distinctive  and  the  thickness  of  the  mycelium  and  of  the  setae  clearly 
separates  this  species  from  M.  cyperi. 


34  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [502 

41.    Meliola  cypeei  Pat. 

Gaillard,  Le  Genre  Meliola :  70,  1892. 

On  Cyperus  sp. 

Mayaguez,  Oct.  31,  '13,  3946. 

On  Scleria. 

Manati,  Nov.  25,  13,  5252,  5286. 
On  Mariscus  jamaicensis  (Crantz)  Britton. 

San  Juan,  Aug.  15,  '15,  9221. 

This  species  and  M.  circinans  are  remarkable  in  that  they  have  both 
mycelial  and  perithecial  setae  and  one  is  loath  to  admit  that  two  distinct 
species  showing  this  very  unique  character  are  to  be  found  in  Porto 
Rico,  especially  upon  the  same  host,  and  more  especially  upon  the  same 
plant,  No.  9221.  Still,  a  study  of  these  two  forms  bears  in  the  convic- 
tion that  they  are  actually  distinct,  one  with  apiculate  spores,  the  other 
obtuse,  one  with  cylindrical,  narrow,  capitate,  hyphopodia,  the  other 
with  thick  angular  ones,  one  with  thick  setae  and  mycelium,  the  other 
thin. 

SECTION  E 

Spores,  4-sep'tate,  mycelial  setae  simple.    No  perithecial  appendages. 
KJEY  TO  Species  of  Section  E 


Spores  acute 

M.  psidii  No.  42 

Spores  not  acute 

,    Setal  tips  swollen 

M.  clavulata  No.  43 

Setal  tips  not  swollen 

Tips  often  uncinate 

M.  nigra  No.  44 

Tips  not  often  uncinate 

Capitate  hyphopodia  opposite 

Head  cell  conic 

M.  praetervisa  No.  45 

Head  cell  rounded 

M.  andirae  No.  46 

Capitate  hyphopodia  in  part  opposite, 

in  part  alternate 

Opposite  hyphopodia  numerous 

Head  cell  very  irregular 

M.  monensis  No.  47 

Head  cell  not  very  irregular 

Setae  400/* 

M.  thouiniae  No.  48 

Setae  600)1* 

M.  didymopanicis  No.-^ 

Setae  900/* 

M.  amomicola  No.  50 

503] 


MELIOLA  IN  PORTO  RICO  — STEVENS 


35 


Opposite  hyphopodia  comparatively 
few 

Setae  1100/x  long 
Setae  600-700/x  long 
Capitate  hyphopodia  alternate 

Many  of  the  head  cells  very  irregu- 
lar or  angular 
Mycelium  very  crooked 
Setae  sparse 
Setae  abundant 
Mycelium  not  very  crooked 

Capitate  hyphopodia  very  dis- 
tant, 700-100/x 
Capitate  hyphopodia  less  distant 
Setae  obtuse 
Setae  acute 
Setae  brown 
Setae  black 
Head  cells  not  strongly  angular 
Setal  tips  acute 

Mycelium  quite  straight 
Setae  not  broadly  curved 
Capitate  hyphopodia  ovate 
Capitate  hyphopodia  cyl- 
indrical 
Setae  broadly  curved 
Mycelium  more  or  less 
crooked 
Mycelium  decidedly 
crooked 
Setae  250;li 
Setae  150/a 
Mycelium  slightly  crooked 
Head  cells  ovate  to  glo- 
bular 

Head  cells  elliptical 
Setae  tips  obtuse 
Head  cell  short,  nearly  globular 
Capitate  hyphopodia  20/* 

apart 
Capitate  hyphopodia  35/x 
apart 


M.  myrsinacearum  No.  51 
M.  pilocarpi  No.  52 


M.  stenotaphri  No.  53 
M.  capsicola  No.  54 

M.  paucipes  No.  55 
M.  panici  No.  56 

M.  rudolphiae  No.  57 
M.  serjaniae  No.  58 


M.  dipholidis  No.  59 

M,  ocoteicola  No.  60 
M.  pauUiniae  No.  61 


M.  chamaecristae  No.  62 
M.  earlii  No.  63 


M.  gesneriae  No.  64 
M.  jatrophae  No.  65 


M.  raayepeae  No.  66 
M.  gymnanthicola  No.  67 


36  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [504 

Head  cell  cylindrical  or  only 
very  slightly  thickened 
Mycelium  and  hyphopodia  not 

irregular  ^I.  lucumae  No,  68 

Mycelium  and  hyphopodia 

irregular  ^I.  amiphitrieha  No.  69 

Head  cell  ovate  or  elliptical 

Setae  very  long,  1000/x  M.  byrsonimae  No.  70 

Setae  not  so  long 

Setae  very  numerous  '  M.  tabernaemontana 

No.  71 
Setae  less  numerous 
Tips  dark 
Setae  straight  M.  ambigua  No.  72 

Setae  curved  M.  pauUiniae  No.  61 

Tips  pale 

Head  cell  elliptical         M.  psychotriae  No.  73 
Head  cell  broader 

Spores  small,  35/1,       M.  mayepeicola  No.  74 
Spores  large,  60/x        M.  clusiae  No.  75 

M.  guareae  found  under  section  G.,  if  the  rare  forked  setae  be 
overlooked,  might  be  sought  in  this  section. 

The  species  of  this  section  offer,  perhaps,  the  greatest  difficulty  of 
classification  of  all  of  the  Meliolas  because  of  .the  very  large  number  of 
forms  which  fall  within  the  section  and  the  few  characters  involved. 
Chief  dependence  for  specific  characterization  must  be  placed  upon  the 
setae,  mycelium,  and  hyphopodia,  since  differences  are  often  wanting  in 
other  characters. 

42.    Meliola  psroii  Fr. 

Linnaea  5 :  549,  1830. 
On  Psidium  guajava  L. 

Yauco,  Oct.  3,  '13,  3120.  San  German,  Dec.  12,  '13,  5841.  Maya- 
guez,  Oct.  31,  '13,  3899,  March  9,  '13,  493,  6443.  San  Sebastian,  Nov. 
22,  '13,  5202.  Vega  Alta,  Nov.  13,  4183.  Jajome  Alto,  Dec.  3,  '13, 
5642di,  July  17,  '15,  8377.  Arecibo-Lares  Road,  June  21,  '1^,7302.  Dos 
Bocas,  below  Utuado,  July  8,  '15,  8033.  Vega  Baja,  July  2,  '15,  7721. 
Sabana  Liana,  Aug.  13,  '15,  9377.  Maricao,  July  20,  '15,  8860.  Utuado, 
6563.    Jayuya,  3120&. 

Collected  by  Heller,  No.  4360,  near  Mayaguez. 

The  shape  of  the  ascospores  is  the  chief  distinguishing  character  of 
this  species.    The  form  is  very  common  on  the  guava  wherever  it  grows. 


505]  MELIOLA  IN  PORTO  RICO  — STEVENS  37 

43.    Meliola  clavulata,  Wint. 

Hedw.  25 :  98,  1886. 
On  Ipomoea  sps. 

Sabana  Liana,  Aug.  13,  '15,  9368.    Monacillo,  Aug.  12,  '15,  9342. 
Eio  Piedras,  Nov.  3,  '13,  5^,W.    Trujillo  Alto,  Aug.  15,  '15,  9419.    El 
Miradero,  Aug.  4,  '15,  9169.    Vega  Alta,  Nov.  1,  '13,  4088. 
On  Ipomoea  cathartica  Poir.  Fig.  32. 

Rio  Arecibo,  K.  64.7,  July  8,  '15,  7837. 

The  folowing  collections  appear  to  belong  to  the  same  species  but  in 
every  instance  the  terminal  setal  cell  was  broken  off. 
On  Ipomoea  cathartica  Poir. 

El  Alto  de  la  Bandera,  July  15,  '15,  8655,  July  16,  '15,  8692.  Rio 
Arecibo,  K.  64.5,  July  8,  '15,  7782.    Vega  Baja,  July  2,  '15,  7729. 

On  Ipomoea  batatas  (L.)  Lam. 

Vega  Alta,  Nov.  1,  '13,  5725.  Rio  Tanama,  July  7,  '15,  7927, 
7926.    Maricao,  July  20,  '15,  8954. 

On  Ipomoea  tiliacea  (W.)  Choisy. 
Mayaguez,  No.  46. 

On  Ipomoea  sps. 

Trujillo  Alto,  Aug.  15,  '15,  9432.  Rio  Piedras,  Aug.  11,  '15,  9466, 
Aug.  10,  '15,  9196.  Mayaguez,  Aug.  12,  '15,  8098.  San  German,  Dec. 
12,  '13,  5850. 

The  species  was  originally  described  from  St.  Thomas,  Africa,  but 
the  Porto  Rican  specimens  agree  remarkably  with  Winter's  description, 
and  with  a  "cotype"  specimen  (E.  Ule,  Rio  de  Janeiro,  Brazil  7,  1887), 
kindly  sent  to  me  by  H.  Sydow. 

44.    Meliola  nigra  sp.  nov. 

Colonies  very  black,  velvety  with  setae,  amphigenous,  more  abun- 
dant above,  circular,  1-10  mm.  in  diam.  Mycelium  forming  a  close  net- 
work of  threads,  branches  mostly  opposite  and  at  nearly  right  angles, 
7/i  in  diameter. 

Capitate  hyphopodia  alternate,  not  crowded,  about  llfi  apart, 
head  cell  obovoid  or  pyriform  or  angular,  14  x  10/x,  basal  cell  short. 
Mucronate  hyphopodia  opposite,  bottle-shaped,  17/x  long.  Perithe- 
cial  setae  none.  Mycelial  setae  many,  forming  a  dense  covering  to  the 
whole  of  the  colony  except  its  extreme  edge.  About  200-270/i  long,  7-9/i 
thick,  dark  throughout,  curved,  often  recurved  at  tip.     Tip  obtuse. 

Perithecia  150-160/1,  slightly  rough  with  rounded  protuberances. 
Asci  2-spored ;  ascospores  4-septate,  brown,  very  slightly  constricted, 
obtuse,  37-41  x  14-17/x. 


38  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [506 

On  Laguncularia  racemosa  (L.)  Gaertn. 

Guanajibo,  June  19,  15,  7197  (type).    Joyuda,  May  31,  '15,  363. 

45.    Meliola  praetervtsa  Gaill. 

Gaillard,  Le  Genre  Meliola :  78,  1892. 
On  Coccolobis  pyrifolia  Desf.  Fig.  33. 

Mayaguez,  June  15,  '15,  7065,  Feb.  9, 1900,  collected  by  Heller.    Ja- 
jome  Alto,  Dec.  3,  '13,  5555a. 
On  Coccolobis  sintenisii,  Urb. 

Mayaguez,  June  15,  '15,  7066. 

On  Coccolobis  sp. 

Jajome  Alto,  July  7,  '15,  17,  8386. 
On  Cupania  americana  L. 

Mayaguez,  June  23,  '15,  7372. 

The  form  on  Cupania  has  the  setae  occasionally  forked  and  the 
capitate  hyphopodia  are  conical  rather  than  cylindrical.  This  species  is 
quite  remarkable  for  its  crowded  opposite  hyphopodia.  These  hypho- 
podia, moreover,  are  set  at  very  uniform  angles  owing  to  the  fact  that 
the  inner  side  of  the  stalk  cell  is  uniformly  shorter  than  the  outer  side. 
The  specimens  on  No.  8386  have  setae  somewhat  longer  than  on  other 
hosts  and  no  forked  ones  were  observed. 

46.    Meliola  andirae  Earle 

BuU.  N.  Y.  Bot.  Gard.  3 :  303,  1905. 
On  Andira  jamaicensis  (W.  Wr.)  Urb.    Fig.  34. 

Rio  Arecibo  K,  64.7,  July  8,  '15,  7800.  Martin  Pena,  Aug.  11,  '15, 
9294.  Yauco,  Oct.  3,  '13,  3132,  3247,  3137.  St.  Ana,  Dec.  31,  '13,  6613. 
Maricao,  Jan.  10,  '13,  204,  Apr.  3,  '13,  766.  Dos  Bocas,  below  Utuado, 
Dec.  30,  '13,  6566.  Vega  Alta,  Nov.  13,  '13,  4180.  Mayaguez,  May  1, 
'13,  1078.  Lares,  Nov.  22,  '13,  4917.  Maricao,  July  19,  '15,  8901. 
Manati,  Nov.  25,  '13,  5629,  Aug.  1915,  9481.  This  species  conforms  fully 
with  Heller's  type  specimen  No.  6448,  collected  at  Santurce,  Jan.  22, 
1903,  and  is  one  of  the  best  marked  of  all  the  Meliolas. 

47.    Meliola  monensis  sp.  nov. 

Colonies  mainly  epiphyllous,  black,  small,  1-2  mm.  in  diam.,  puncti- 
form.  Mycelium  forming  a  very  close  network  of  threads;  branches 
crowded,  Ift.  in  diameter. 

Capitate  hyphopodia  alternate  or  opposite,  crowded,  mycelial  cells 
about  20/1  long,  head  cell  very  irregularly  lobed,  about  17  x  17/i,  the 
basal  cell  about  7/x  long.    Mucronate  hyphopodia  few,  scattered,  alter- 


507]  MELIOLA  IN  PORTO  RICO  — STEVENS  39 

nate  or  opposite,  bottle-shaped,  the  neck  narrow,  often  crooked,  20/^  long. 
Peritheeial  setae  none.  Mycelial  setae  abundant,  straight,  rigid,  black, 
simple,  about  400/>i  long,  10-14/i  thick.    Tip  obtuse. 

Perithecia  250)u.,  slightly  rough  with  rounded  protuberances.     Asci 
78  X  38/i,  soon  evanescent ;  ascospores  4-septate,  pale  brown,  slightly  con- 
stricted, obtuse,  45-52  x  20-22;i. 
On  Amyris  elemifera  L.     Fig.  35. 

Mona  Island,  Dec.  20-21,  13,  6158  (type),  6150,  6146.  Guayanilla, 
July  14,  '15,  8547. 

The  colonies  of  this  species  are  characteristic  and  the  capitate  hy- 
phopodia  distinctive. 

48.    Meliola  thouiniae  Earle 

Bull.  N.  Y.  Bot.  Gard.  3 :  308,  1905. 
On  Allophylus  crassinervis  Rad. 

Quebradillas,  Aug.  5,  15,  9003. 
On  Thouinia  striata  Rad.     Fig.  36. 

Vega  Baja,  July  2,  15,  7756.  Rio  Arecibo,  K.  64.7,  July  8,  15, 
7773. 

The  type  was  collected  on  the  same  host  by  Heller  near  Bayamon, 
Jan.  21,  1903,  No.  6435. 

The  cylindrical,  capitate  hypophodia,  so  crowded  as  to  touch  each 
other,  give  a  unique  appearance  to  the  colonies  on  Allophyllus.  Study 
of  the  type  specimen  and  my  own  specimens  on  Thouinia  shows  varia- 
tion in  the  crowding  of  the  hyphopodia.  In  some  parts  of  the  colony 
they  are  densely  crowded  and  opposite ;  at  the  edge  of  the  same  colony 
they  may  be  strictly  alternate  and  sparse. 
On  Winterana  canella  L. 

Guayanilla,  July  14,  15,  8548,  July  26,  15,  9075.    Mona  Island, 
Dec.  20,  13,  6154.    Ponce,  Aug.  7,  15,  9189. 
On  Krugiodendron  ferreum  (Vahl)  Urb, 

Guayanilla,  July  14,  15,  8594.  Rio  Tanama,  near  Arecibo,  July  6, 
15,  7895.  Quebradillas,  Aug.  10,  15,  9247,  June  20,  15,  9266.  Coamo, 
Feb.  6,  13,  814,  Apr.  6,  13,  831. 

49.    Meliola  didymopanicis  P.  Henn. 

Hedw.  34:  106,  1895. 
On  Dendropanax  arhoreum  (L.)     Dec.  &  PI. 

Rio  Arecibo,  K.  64.7,  July  8,  15,  7775,    Mayaguez  Mesa,  June  25, 
15,  7440.    Florida  Adentro,  July  1,  15,  7647. 
On  Dendropanax  laurifolium  (E,  March.)  R.  C.  Schneider. 

El  Alto  de  la  Bandera,  July  14,  15,  8265. 


40  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [508 

The  species  was  described  from  Brazilian  specimens  on  Didymopa- 
nax  sps.  My  material  does  not  agree  exactly  with  the  somewhat  meagre 
description,  but  does  agree  fully  with  a  co-type  specimen  (Glazion, 
Minas  Geraes,  Brazil  1893)  kindly  furnished  by  Dr.  H.  Sydow.  No 
perithecial  setae  are  evident,  though  the  mycelial  setae  are  often  clus- 
tered around  the  base  of  the  perithecium,  which  may  account  for  this 
character  in  the  description.  A  striking  character  in  my  specimens  is 
the  capitate  hyphopodia,  which  are  usually  opposite,  with  a  regular,  oval 
head  cell.  The  chief  distinction  between  -this  species  and  M.  araliae 
seems  to  be  in  the  length  of  the  setae.  It  is  possible  that  M.  didymo- 
panicis  should  be  reported  under  that  name.  M.  araliae  was  collected 
in  Porto  Rico,  by  Ule,  No.  242  in  1884  on  "Aralia  arborea". 

50.     Meliola  amomicola  sp.  nov. 

Colonies  mostly  hypophyllous,  black,  circular  to  irregular,  diffuse, 
5-15  mm.  in  diam.  Mycelium  rather  closely  woven,  nearly  straight, 
black  to  pale  straw  color,  branches  mostly  opposite,  6/x  thick. 

Capitate  hyphopodia  mostly  opposite,  two  per  cell,  cells  about  24/x 
long.  Head  cell  cylindrical,  straight  or  crooked,  little  or  no  thicker  than 
the  stalk  cell,  stalk  cell  2-4/u,  long.  Mucronate  hyphopodia  scattered, 
bottle-shaped,  24  x  6/x.  Perithecial  setae  none.  Mycelial  setae  sparse, 
scattered,  long,  900-1000/u.,  lOytt  thick  at  base,  black  throughout,  acute. 

Perithecia  scattered,  180/u,  in  diam.    Spores  15  x  11  fi,  strongly  con- 
stricted, obtuse. 
On  Amomis  caryophyllata  (Jacq.)  Krug.  and  Urb.     Fig.  37. 

Mayaguez  Mesa,  June  15,  '15,  7054  (type).  Mayaguez,  June  25, 
'15,  7483. 

51.    Meliola  myrsinacearum  sp.  nov. 

Colonies  amphigenous,  more  abundant  above,  irregular,  circular, 
1-10  mm.  in  diam.,  confluent.  Mycelium  black,  forming  a  close  network, 
10/x  in  diam.,  branches  mostly  opposite. 

Capitate  hyphopodia  alternate,  unilateral  or  irregular,  not  crowded, 
1  per  cell,  cells  about  34/Lt  long,  head  cell  nearly  cylindrical  or  slightly 
pyriform,  20  x  14/i,,  the  basal  cell  2-4yx  long.  Mucronate  hyphopodia 
few  and  scattered,  alternate  or  opposite,  bottle-shaped,  24  x  lO/i.  Peri- 
thecial setae  none.  Mycelial  setae  few  or  absent  in  young  colonies,  abun- 
dant in  old  colonies,  straight  or  slightly  curved,  625-}-  x  lO/i,  dark 
throughout,  tip  obtuse. 

Perithecia  200ju,,  somewhat  rough.    Asci  soon  evanescent;  ascospores 
4-septate,  brown,  slightly  constricted,  obtuse,  51  x  17-20/x. 
On  Ardisia  guadalupensis  Due. 

Mayaguez  Mesa,  June  29,   '15,  7576  (type),  7057. 


509]  MELIOLA  IN  PORTO  RICO  — STEVENS  41 

On  Myrsinaceae  indet, 

Maricao,  July  19,  '15,  8905,  Oct.  20,  '13,  3681. 

This  species  is  closely  related  to  M.  amphitricha  but  distinguished 
from  it  by  the  shape  of  the  capitate  hyphopodia. 

52.    Meliola  pilocarpi  sp.  nov. 

Colonies  hypophyllous,  irregular,  4-15  mm.  in  diam.,  black.  My- 
celium forming  a  loose  network  of  threads,  branches  opposite  or  alter- 
nate, 8/t  in  diameter. 

Capitate  hyphopodia  alternate,  rarely  opposite,  not  crowded,  one 
per  cell,  cells,  20-30)u,  long,  head  cell  cylindrical  or  slightly  thickened, 
20  X  lO/Lt,  the  basal  cell  short.  Mucronate  hyphopodia  mostly  opposite, 
bottle-shaped,  the  neck  often  curved,  20  x  7/x.  Perithecial  setae  none. 
Mycelial  setae  few,  scattered,  straight,  black,  1100/i,  long,  10/*  thick  at 
base,  tip  acute. 

Perithecia  190/a  in  diam.     Asci  soon  evanescent;  ascospores  4-sep- 
tate,  brown,  strongly  constricted,  obtuse,  51-54  x  17-20/t. 
On  Pilocarpus  racemosus  Vahl. 

Mayaguez,  June  13,  '15,  7080  (type). 

53.    Meliola  stenotaphri  sp.  nov. 

Mycelium  crooked  or  in  zig-zag  bends  about  equal  in  number  to  the 
hyphopodia. 

Capitate  hyphopodia  alternate,  or  for  considerable  distances  uni- 
lateral, with  distinct  stalk  of  much  smaller  diameter  than  the  head.  Stalk 
cell  7fi  wide,  5-9/a  long;  head  cell  spherical  or  oval,  about  20  x  14/li. 
Mucronate  hyphopodia  scarce,  opposite  or  alternate,  ampulliform, 
7  X  14yu,.  Mycelial  setae  dark,  opaque,  about  275/*  long,  7/a  thick  at  base, 
simple  and  acute  or  very  rarely  bifid.    Perithecial  setae  none. 

Perithecia  small,  about  lOO/i,  surface  rough  with  rounded  protuber- 
ances.    Spores  oblong,  4-septate,  obtuse,  slightly  constricted,  30-44  x 
10-14/*. 
On  Stenotaphrum  secundatum  (Walt.)  Ktze.     Fig.  38. 

Manati,  Nov.  5,  '13,  4304  (type).  Rio  Tanama,  near  Arecibo,  July 
7,  '15,  7940  July  7,  '15,  7852.  Dos  Bocas,  below  Utuado,  July  8,  '15, 
8023.    Arecibo,  K.  64.7,  July  8,  '15,  7810. 

The  mycelium  is  distinctive,  rather  closely  woven  and  with  numer- 
ous crooks  or  zig-zags.  The  long  stalks  and  rounded  heads  of  the  capi- 
tate hyphopodia  are  also  sufficient  to  separate  this  from  other  forms. 

54.    Meliola  capsicola  sp.  nov. 
Colonies  amphigenous,  foliicolous  and  caulicolous,  circular,  1-3  mm. 


42  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [510 

in  diam.,  black.    Mycelium  forming  a  very  close  network,  Ip.  in  diame- 
ter, branches  irregular,  crooked. 

Capitate  hyphopodia  alternate,  not  crowded,  1  per  cell,  cells  about 
20  to  30/i  long,  head  cell  very  irregular  in  shape  and  size,  the  basal  cell 
often  long.  Mucronate  hyphopodia  few  and  scattered,  bottle-shaped, 
irregular,  20  x  7/i.  Perithecial  setae  none.  Mycelial  setae  abundant, 
straight  or  slightly  curved,  265  x  10/*,  dark  throughout,  tip  acute. 

Perithecia  170/*,  slightly  rough.    Asci  soon  evanescent;  ascospores 
4-septate,  brown,  slightly  constricted,  obtuse,  41  x  14/i. 
On  Capsicum  baccatum  L.     Fig.  39. 

Manati,  July  2,  '15,  7698.  Dos  Bocas,  below  Utuado,  July  8,  '15, 
8019  (type). 

On  account  of  the  great  variation  in  the  hyphopodia,  both  in  shape 
and  size,  the  form  is  noteworthy. 

55.    ^Ieliola  paucipes  sp.  nov. 

Colonies  amphigenous,  mainly  below,  irregular,  scattered,  diffuse, 
5-10  mm.  in  diam.  Mycelium  forming  a  verj'  loose  network  of  threads, 
branching  irregularly,  7/i  in  diam. 

Capitate  hyphopodia  alternate  or  irregular,  distant,  70-100/*  apart, 
ovoid  or  pyriform,  often  angular,  head  cell  17  x  14/*,  the  basal  cell  about 
4/*  long.  MucroHate  hj-phopodia  mostly  alternate,  bottle-shaped.  My- 
celial setae  none.  Perithecial  setae  scattered,  very  long,  700  x  lO/i, 
straight,  simple,  tip  obtuse. 

Perithecia  160/*,  slightly  rough,  ostiole  none.    Asci  evanescent ;  asco- 
spores 4-septate,  brown,  very  slightly  constricted,  obtuse,  37  x  14/*. 
On  Piper  hlaUarum,  Spreng.     Fig.  40. 

Mayaguez  Mesa,  June  25,  '15,  7463  (type). 

This  species,  the  only  collection  upon  the  host,  is  distinguished  from 
others  by  its  very  long  mycelial  setae  on  a  loose  mycelium,  with  distant 
hyphopodia. 

56.    ^Meliola  panici  Earle 

Muhlenbergia  1 :  12,  1901. 
On  Panicum  glutinosum  Sw. 

Maricao,  Nov.  18,  '13,  4801,  July  19,  '15,  8934,  July  20,  '15,  8957. 
Monte  de  Oro,  near  Cayey,  Dec.  3,  '13,  5560,  5744,  5672,  5746.  Utuado, 
Nov.  8,  '13,  4389.  El  Alto  de  la  Bandera,  Nov.  8,  '13,  4368,  July  16, 
'15,  8930,  8680,  8647.  Ponce,  Nov.  8,  '13,  4375.  El  Gigante,  Dec.  15, 
'13,  5947.  Las  Marias,  July  10,  '15,  8187. 
On  Paspalum  sckreberianum  (Fl.)  Nash. 

Maricao,  July  19,  '15,  8803. 


511]  MELIOLA  IN  PORTO  RICO  — STEVENS  4S 

On  Lasiacis  compacta  (Sw.)  Hitch. 

Utuado,  Nov.  8,  '13,  4643,  4663. 
On  Lasiacis  divaricata  (L.)  Hitch. 

Arecibo,  Jan.  17,  14,  6810.    Manati,  Nov.  5,  '13,  4298.    Vega  Alta, 
Nov.  5,  '13,  4195,  4189.    Vega  Baja,  Nov.  5,  '13,  45J7.    Nov.  22,  Arecibo, 
by  Mrs.  A.  Chase. 
On  Lasiacis  swartziana,  Hitch. 

Aiiasco,  Oct.  12,  '13,  3561.    Las  Marias,  July  10,  '15,  8191. 
On  Oplismenus  setarius  (Lam.)  Roem.  &  Schult. 

Maricao,  July  19,  '15,  8776. 
On  Andropogon  leucostachyus  H.  B.  K. 

El  Alto  de  la  Bandera,  July  15,  '15,  8671. 
On  Andropogon  bicornis  L. 

Las  Marias,  July  10,  '15,  8168.    Vega  Baja,  July  2,  '15,  7751. 
On  Olyra  latifolia  L. 

El  Miradero,  Aug.  4,  '15,  9159.    Mayaguez  Mesa,  June  25,  '15,  7485^ 
7486,  June  29,   '15,  7587,  June  24,   '15,  7390.     Maricao,  July  20,    '15, 
8959.    San  German,  June  27,  '15,  7518.    Arecibo,  Jan.  17,  '14,  6805. 
On  Chloris  petraea  Sw. 

Mayaguez,  Aug.  1,  '15,  7810. 
On  Ichnanthus  pallens  (Sw.)  Munro. 

Maricao,  Apr.  3,  '13,  829.    Monte  de  Oro,  Dec.  3,  '13,  5755.    Maya- 
guez Mesa,  June  25,  '15,  7441,  7485. 
On  Gramineae  indet, 

Monte  de  Oro,  Dec.  3,  '13,  5659.  Arecibo,  Jan.  17,  '14,  6796.  Tru- 
jillo  Alto,  Aug.  15,  '15,  9441. 

The  type  was  collected  by  Heller  near  Santurce,  Porto  Rico. 

The  form  on  Panicum  glutinosum  and  Ichnanthus  is  usually 
densely  parasitized;  the  setae  do  not  develop  typically,  nor  are  the 
capitate  hyphopodia  as  likely  to  be  angular  as  when  on  the  other  hosts 
listed. 

The  mycelium  upon  Lasiacis  swartziana,  L.  divaricata,  Paspalum 
schreherianum,  Olyra,  Oplismenus,  the  Andropogons  and  Ichnanthus  is 
frequently  straight  for  great  distances,  but  this  I  take  to  be  due  to  the 
surface  of  the  host  rather  than  to  a  specific  difference  in  the  fungus. 

57.    Meliola  rudolphiae  sp.  nov. 

Mycelium  strictly  epiphyllous  in  circular  spots  or  diffuse,  black. 
Mycelial  setae  abundant,  long,  400//.,  black,  tapering,  septate,  acute,  sim- 
ple ;  mycelium  crooked. 

Capitate  hyphopodia  alternate,  stalk  cell  short,  3-6/li,  head  cell  ir- 


44         .  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [512 

regular,  usually  bent  to  one  side,  10  x  lljx.    AmpuUiform  hyphopodia 
alternate,  7  x  21/x. 

Perithecia  numerous,  clustered,  black,  150-170/x,  slightly  flattened, 
cup-shaped  when  dry,  rough  with  low  tubercles.    Asei  4-spored,  65  x  27/i. 
Spores   4-septate,   dark  brown,   ends   rounded,    constriction   moderate, 
48-51  X  17-20/*. 
On  Rudolphia  voluhilis  Willd.     Fig.  41. 

Monte  Alegrillo,  IMaricao,  Nov.  14,  '13,  4791  (type).  Maricao,  Nov, 
18,  '13,  4835.  Luquillo  Forest,  Dec.  2,  '13,  5439.  El  Alto  de  la  Ban- 
dera, July  10,  '15,  8698.    Aibonito,  July  16,  '15,  8467. 

This  species  resembles  M.  montagnei,  differing  from  it  in  color, 
spores,  thickness,  and  density  of  mycelium. 

58.  Meliola  sebjaniae  sp.  nov. 

Colonies  hypophyllous,  irregular,  black,  1-6  mm.  in  diam.  Mycelium 
forming  a  loose  network  of  threads  which  branch  irregularly,  6/i  in 
diameter. 

Capitate  hyphopodia  small,  alternate  or  irregular,  distant,  40-70/x 
apart,  head  cell  ovoid  or  pyriform  and  much  lobed,  17  x  10/x,  the  basal 
cell  3-6/Lt.  Mucronate  hyphopodia  usually  more  abundant  than  the  capi- 
tate hyphopodia,  opposite,  bottle-shaped  to  conic,  narrow,  24  x  6fi.  Peri- 
thecial  setae  non^.  Mycelial  setae  abundant,  black  throughout,  straight 
or  slightly  curved,  280-800  x  10,u.    Tip  abruptly  acute. 

Perithecia  150-190/x,  smooth.     Asci  soon  evanescent;  ascospores  4- 
septate,  brown,  constricted,  obtuse,  41  x  17/a. 
On  Serjania  polyphylla  (L.)  Rad.     Fig.  42. 

Vega  Baja,  Feb.  22,  '13,  425  (type).  Florida  Adentro,  July  1,  '15, 
7654.  Arecibo-Lares  Road,  June  21,  '15,  7219.  Catano,  Nov.  6,  '13, 
4181. 

This  form  is  clearly  differentiated  from  M.  parenchymate,  M.  am- 
higua,  and  M.  thoniniae  previously  described  on  the  Sapindaceae,  all  of 
which  have  simple  mj-celial  setae.  The  chief  characters  are  angular, 
capitate  hyphopodia,  long,  abruptly  pointed  setae,  and  numerous  mucro- 
nate hyphopodia. 

59.  IVIeliola  dipholidis  sp.  nov. 

Colonies  amphigenous,  irregular,  circular,  2-5  mm.  in  diam.  My- 
celium black,  forming  a  loose  network,  7(x  in  diameter,  branches  mainly 
opposite. 

Capitate  hyphopodia  small,  alternate  or  irregular,  not  crowded,  1 
per  cell,  cells  about  21  fx  long,  head  cell  obovoid  to  pyriform  or  globular, 
often  angular  or  bent,  17  x  10/t,  the  basal  cell  5-7/i  long.     Mucronate 


513]  MELIOLA  IN  PORTO  RICO  — STEVENS  45 

hyphopodia  alternate  or  opposite,  wedge  to  bottle-shaped,  18  x  Ifi.  Peri- 
thecial  setae  none.  Mycelial  setae  few,  straight  or  slightly  curved,  400  x 
7/A,  dark  throughout,  tip  acute. 

Perithecia  llO-lSO/u,,  slightly    rough  with    rounded    protuberances. 
Asci  2-spored,  soon  evanescent;  ascospores  4-septate,  brown,  cylindrical, 
elliptical,  distinctly  thicker  at  the  middle  than  toward  the  ends,  strongly 
constricted,  obtuse,  41-44  x  18/u,. 
On  Dipholis  salicifolia  (L.)  A.DC. 

Guayanilla,  July  14,  '15,  8549  (type).  Quebradillas,  June  20,  '15, 
7265. 

This  species  differs  from  M.  amphitricha  in  shape  of  the  capitate 
hyphopodia  and  spores  and  from  M.  brasiliensis  in  character  of  spores 
and  setae. 

60.  Meliola  ocoteicola  sp.  no  v. 

Colonies  amphigenous,  irregular,  3-10  mm.  in  diam.,  confluent. 
Mycelium  forming  a  rather  loose  network  of  threads,  branches  mostly 
opposite,  IfjL  in  diameter. 

Capitate  hyphopodia  alternate,  not  crowded,  about  30/x  apart,  cylin- 
drical, head  cell  scarcely  thicker  than  the  stalk,  apex  obtuse,  the  basal 
cell  very  short.  Mucronate  hyphopodia  few  and  scattered,  usually  oppo- 
site, conical  to  bottle-shaped,  20  x  6/*.  Perithecial  setae  none.  Mycelial 
setae  few,  straight  or  slightly  curved,  300-350/i,,  dark,  tip  acute. 

Perithecia  150/t,  ostiole  none.     Asci  soon  evanescent;  ascospores  4- 
septate,  brown,  strongly  constricted,  obtuse,  40  x  17/ix. 
On  Ocotea  leucoxylon  (Sw.)  Mez.     Fig.  43. 

Mayaguez,  June  29,  '15,  7560  (type).  Monte  Alegrillo,  near  Mari- 
cao,  Nov.  14,  '13,  4762. 

On  Chrysophyllum  sp. 

Monte  Alegrillo,  Nov.  14,  '13,  4731  (type),  Nov.  18,  '13,  4519. 

In  characters  of  the  capitate  hyphopodia  this  is  similar  to  M.  mag- 
noliae  but  is  still  clearly  distinct  from  that  form. 

Nos.  4579  and  4731  on  Chrysophyllum  present  in  the  hypophyllous 
colonies  a  peculiar  variation,  in  that  the  mycelium  is  exceedingly  crooked 
and  irregular.  These  represent,  perhaps,  a  distinct  species,  but  on  ac- 
count of  the  general  resemblance  of  the  capitate  hyphopodia  and  the 
setae  to  the  other  form  of  Chrysophyllum,  they  are  regarded  as  co-spe- 
cific with  it. 

61.  Meliola  paulliniae  sp.  nov. 

Colonies  black,  setose,  circular,  epiphyllous,  3-8  mm.  in  diam.    My- 


46  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [514 

celium  forming  a  loose  network  of  straight,  radiating  threads,  8/*  thick, 
branches  mostly  opposite. 

Capitate  hyphopodia  alternate,  often  at  right  angles  to  mycelium, 
not  crowded,  1  per  cell,  cells  about  34/i  long,  head  cell  ovate,  17  x  14/t, 
stalk  cell  short.  Mucronate  hyphopodia  usually  opposite,  bottle-shaped, 
neck  narrow.  Perithecial  setae  none.  Mycelial  setae  abundant,  straight, 
simple,  black  throughout,  rigid,  abruptly  acute,  275-500  x  8-9/i. 

Perithecia   150-160)u,.     Asci  evanescent,  spores  37-40  x  14-15/t,  4- 
septate,  constricted,  obtuse. 
On  Paiillinia  pinnata  L. 

Mayaguez,  May  3,  '13,  1149  (type),  Oct.  31,  '13,  3956,  3914,  3967&. 
Vega  Baja,  Feb.  22,  '13,  376.    El  Alto  de  la  Bandera,  July  16,  '15,  8722. 
Rio  Arecibo,  K.  64.7,  July  8,  '15,  7787.    Barros,  Jan.  2,  '13,  55. 
On  Casearia  ramiflora  Vahl. 

Martin  Pena,  Aug.  11,  '15,  9306,  9328.  Barceloneta,  Aug.  10,  '15, 
9256.  Manati,  July  2,  '15,  7688.  Vega  Baja,  March  1,  '13,  512,  July  2, 
'15,  7745,  Nov.  5,  '13,  4262,  March  2,  '13,  510.  St.  Ana,  Dec.  31,  '13, 
6683.    San  German,  Dec.  12,  13,  5844. 

On  Casearia  sylvestris  Sw. 

Mayaguez  Mesa,  June  29,  '15,  7566,  June  14,  '15,  7017,  May  1,  '13, 
1051,  May  4,   '13,  1200.     Miradero,  Aug.  4,   '15,  9136.     Arecibo-Lares 
Road,  June  21,  '15,  7285.    San  German,  Dec.  12,  '13,  5837,  5864. 
On  Casearia  arhorea  (L.  CI.  Rich.)  Urb. 

Monte  de  Oro,  Dec.  13,  '13,  5709. 
On  Casearia  aculeata  Jacq. 

Lajas,  June  17,  '15,  7151. 
On  Casearia  sp. 

Dos  Bocas,  below  Utuado,  Dec.  '17,  '15,  6071.  Mayaguez,  June  15, 
'15,  7074,  Oct.  31,  '13,  3935.    3920. 

The  specimens  on  Casearia  differ    somew^hat    from  those  on  Paul- 
linia,  especially  in  the  character  of  the  setae. 
On  Mammea  americana  L. 

Maricao,  Sept.  20,  '13,  3641.    Las  Marias,  July  10,  '15,  8207. 
On  host  unknown,  Martin  Pena,  Aug.  11,  '15. 

The  specimens  upon  Mammea  show  distinctly  longer  and  more 
slender  setae  than  those  on  other  hosts  and  are  perhaps  specifically  dis- 
tinct. 

According  to  the  keys  of  Gaillard  this  species  would  be  identified 
as  M.  polytricha,  K.  and  C,  therefore,  for  purposes  of  comparison,  I  am 
publishing  a  photograph  of  the  type  of  M.  polytricha,  fig.  44. 


515]  MELIOLA  IN  PORTO  RICO  — STEVENS  47 

62.    Meliola  chamaecristae  Earle 

BuU,  N.  Y.  Bot.  Gard.  3 :  304,  1905. 

Described  "on  Chamaecrista  glandulosa,"  collected  by  Heller,  No. 
6371. 

63.    Meliola  earlii  sp.  nov. 

Colonies  amphigenous,  irregular,  1-4  mm.  in  diam.  Mycelium  form- 
ing a  loose  network  of  crooked  threads  which  branch  irregularly,  often 
angling  at  the  hyphopodia,  about  6fx  in  diam. 

Capitate  hyphopodia  small,  alternate,  not  crowded,  about  25/t 
apart,  ovoid  or  pyriform,  sometimes  angular  or  bent,  8  x  10/x,  the  basal 
ceU  short.  Mucronate  hyphoodia  few,  bottle-shaped.  Perithecial  setae 
none. 

Mycelial  setae  few  or  numerous,  about  160/x,  long,  straight  or  slightly 
curved,  opaque,  tip  acute. 

Perithecia  160/x,  rough  with  rounded  protuberances,  ostiole  none. 
Asci  soon  evanescent ;  ascospores  4-septate,  brown,  somewhat  constricted,, 
obtuse,  35-40  x  lO/u,. 
On  Pilea  sp.     Fig.  45. 

Florida  Adentro,  July  1,  '15,  7685  (type). 
On  Pilea  parietaria  (L.)  Bl. 

Rio  Arecibo  K.  64.7,  July  8,  '15,  7804. 
On  Pilea  nummularifolia  (Sw.)  Wedd. 

Jajome  Alto,  Dec.  3,  '13,  5640. 

The  species  is  associated  with  a  Meliola  determined  by  Earle  as  M. 
iriloha  on  Pilea  parietaria.  Heller,  No.  558.  It  is  differentiated  from 
M.  leptospora  by  spore  characters.  This  Meliola  though  associated  with 
M.  triloba  is  clearly  distinct  from  it  in  the  general  habit  of  the  mycelium 
and  especially  in  the  presence  of  mycelial  setae  on  M.  earlii. 

The  species  is  named  in  honor  of  F.  S.  Earle  in  recognition  of  his 
researches  upon  Porto  Rican  fungi. 

64.    Meliola  gesneriae  sp.  nov. 

Colonies  hypophyllous,  circular,  2-8  mm.  in  diam.  Mycelium  black, 
forming  a  close  network,  7/t  in  diameter,  branches  mostly  opposite. 

Capitate  hyphopodia  alternate,  not  crowded,  1  per  cell,  cells  about 
24/x,  long,  head  cell  ovate  to  globular,  10  x  14fi,  the  basal  cell  4-6/i  long. 
Mucronate  hyphopodia  alternate  or  opposite,  bottle-shaped.  Perithecial 
setae  none.  Mycelial  setae  straight  or  slightly  curved,  400  x  Ifi,  dark 
throughout,  most  abundant  around  the  perithecia.    Tip  acute. 

Perithecia  110/x,  smooth.  Asci  soon  evanescent ;  ascospores  4-septate, 
brown,  very  slightly  constricted,  41  x  17/m. 


-48  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [516 

On  Gesneria  alhiflora  (Dene.)  O.  Ktz. 

Mayaguez  Mesa,  June  25,  '15,  7431  (type),  7465.    Dos  Bocas,  below 
Utuado,  July  8,  15,  8018,  Dee.  30,  '13,  6590. 
On  Cestrum  laurifolium  I'Her. 

Maricao,  Apr.  3,  '13,  824. 
On  Cestrum  macrophyllum  Vent. 

El  Alto  de  la  Bandera,  July  14,  '15,  8301. 

El  Gigante,  July  16,  '15,  8561. 

65.    Meliola  jatrophae  sp.  nov. 

Colonies  epiphyllous,  circular  to  irregular,  1-4  mm.  in  diam.  My- 
celium forming  a  loose  network  of  threads;  branches  mostly  opposite, 
7fi  in  diameter. 

Capitate  hyphopodia  alternate  or  irregular,  forming  an  acute  angle 
with  the  mycelium,  not  crowded,  about  21  fi  apart,  head  cell  ovate,  17  x 
Ifi,  apex  obtuse,  the  basal  cell  short.  Mucronate  hyphopodia  abundant 
and  crowded  on  certain  threads,  opposite,  bottle-shaped.  Perithecial  setae 
none.  Mycelial  setae  few,  except  around  the  base  of  the  perithecia 
where  they  are  numerous,  curved,  about  250/x  long,  dark,  tip  acute. 

Perithecia  130-150/x,  slightly  rough,   with  rounded  protuberances, 
Asci  soon  evanescent;  aseospores  cylindrical,  4-septate,  brown,  slightly 
constricted,  obtifse,  short,  thick,  30  x  IT/x. 
On  Jatropha  hernandifolia  Vent. 

Rio  Tanama,  near  Arecibo,  July  6,  '15,  7873  (type).  Dos  Bocas, 
near  Utuado,  July  8,  '15,  7930. 

The  most  distinctive  characters  are  the  short,  thick  aseospores  and 
the  ovate,  capitate  hyphopodia,  all  directed  forward  at  an  acute  angle. 

66.    Meliola  mayepeae  sp.  nov. 

Colonies  amphigenous,  more  commonly  epiphyllous,  circular,  1-5 
mm.  in  diam.  Mycelium  black,  forming  a  rather  close  network,  7/*  in 
diameter,  branches  opposite,  mostly  at  acute  angles. 

Capitate  hyphopodia  small,  alternate,  not  crowded,  1  per  cell,  cells 
about  35/x  long,  head  cell  obovoid,  10  x  7/x,  the  basal  cell  Sfi  long.  Mu- 
cronate hyphopodia  not  seen.  Perithecial  setae  none.  Mycelial  setae 
few  to  abundant,  most  plentiful  around  the  perithecia,  slightly  curved, 
about  250  x  6fx,  dark  throughout.     Tip  simple,  obtuse. 

Perithecia  170/i,,  slightly  rough.    Asci  soon  evanescent;  aseospores 
4-septate,  brown,  very  slightly  constricted,  obtuse,  30-35  x  17/a. 
On  Mayepea  domingensis  Krug  and  Urb.     Fig.  46. 

Mayaguez  Mesa,  June  25,  '15,  7468  (type).  El  Alto  de  la  Bandera, 
July  16,  '15,  8703. 


517]  MELIOLA  IN  PORTO  RICO  — STEVENS  49 

This  species  is  distinguished  from  M.  brasiliensis  by  the  shape  of  the 
capitate  hyphopodia  and  the  bases  of  the  setae. 

67.    Meliola  gymnanthicola  sp.  nov. 

Colonies  epiphyllous,  circular,  2-4  mm.  in  diam.  Mycelium  form- 
ing a  close  network,  7/u,  in  diameter,  branches  mostly  opposite  and  often 
at  right  angles. 

Capitate  hyphopodia  alternate,  not  crowded,  1  per  cell,  cells  about 
20/A  long,  head  cell  ovoid  to  nearly  cylindrical,  17  x  lO/x,  the  basal  cell 
2-Zfi  long.  Mucronate  hyphopodia  alternate  or  opposite,  conical  to  bot- 
tle-shaped, irregular,  16-18-  x  7fi.  Perithecial  setae  none.  Mycelial 
setae  scattered,  slightly  crooked,  300  x  7fi.  Tip  obtuse,  dark.  Perithecia 
190/i,  slightly  rough.  Asci  soon  evanescent ;  ascospores  4-septate,  brown, 
very  slightly  constricted,  obtuse,  37  x  17 fi. 
On  Gymnanthes  lucida  Sw. 

Guayanilla,  July  14,  '15,  8596  (type). 

68.  Meliola  lucumae  sp.  nov. 

Colonies  amphigenous,  much  larger  below,  irregularly  circular, 
^-10  mm.  in  diam.,  diffuse.  Mycelium  forming  a  loose  network,  7/a  in 
diameter,  branches  mostly  opposite. 

Capitate  hyphopodia  alternate,  distant,  1  per  cell,  cells  about  35/a 
long,  head  cell  cylindrical  or  tapering  slightly  at  each  end,  17  x  7/m, 
the  basal  cell  3/x  long.  Mucronate  hyphopodia  few,  mostly  opposite, 
narrow-conic,  about  20  x  4/*.  Perithecial  setae  none.  Mycelial  setae 
few  slightly  curved,  200-800  x  7/*,  dark  throughout.    Tip  obtuse. 

Perithecia  100-150)ii,  slightly  rough  with  rounded  projections.  Asci 
soon  evanescent;  ascospores  4-septate,  pale  brown,  slightly  contricted, 
obtuse,  44  x  18)u,. 
On  Lucuma  multiflora  A.  DC.     Fig.  47. 

Las  Marias,  July  10,  '15,  8164  (type). 

The  distinctive  character  of  the  species  is  the  sparse,  diffuse,  my- 
celium, with  cylindrical,  capitate  hyphopodia  associated  with  slightly 
differentiated  mucronate  hyphopodia. 

Guayanilla,  July  14,  '15,  8596  (type). 

69.  Meliola  amphitrichia  Fr. 

Elench.  Fung.  2 :  109,  1828. 

Eeported  by  Earle  *'on  leaves  of  tree."  Heller  collection.  No.  288 
near  Caguas,  1899. 

70.    Meliola  byrsonimae  sp.  nov. 

Colonies  epiphyllous,  circular  to  irregular,  2-5  mm.  in  diam.  My- 
<;elium  forming  a  loose  network  of  threads,  IO/a  in  diam. 


so  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [518 

Capitate  hyphopodia  alternate,  distant,  usually  about  120/1,  apart, 
cylindrical,  20  x  17/*,  often  irregular  or  curved,  the  basal  cell  3-5/i 
long.  Mucronate  hyphopodia  opposite,  bottle-shaped,  about  24/*  long. 
Perithecial  setae  none.  Mycelial  setae  very  few,  scattered,  straight  or 
slightly  curved,  lOOO/i,  long,  dark  throughout.    Tip  obtuse  to  acute. 

Perithecia  150  to  160/x,  smooth,  subtended  when  young  by  an  areola 
of  radiate  hyphae.    Asci  soon  evanescent;   ascospores  4-septate,  brown, 
slightly  constricted,  obtuse,  54  x  18/x. 
On  Byrsonima  lucida  (Sw.)  L.  CI.  Eich. 

Guayanilla,  July  14,  '15,  3541  (type). 

This  is  closely  related  to  M.  amphitricha,  M.  amhigua  and  M.  coral- 
Una,  differing  from  the  last  two  in  spore  size ;  differing  from  the  first, 
in  abundance,  length  and  color  of  setae,  and  in  character  of  capitate 
hyphopodia  and  mycelium. 

71.    Meliola  tabernaemontanae  Speg. 

Ann.  d.  Mus.  Nac.  de  Buenos  Aires ;  33 :  42,  1912. 
On  Rauwolfia  nitida  Jacq. 

Martin  Pena,  Aug.  11,  '15,  9327,  9300. 
On  Tahernaemontana  oppositifolia  (Spreng.)  Urb. 

Maya^ez,  June  15,   '15,  ?]073.     Hormigueros,  K.  7,  June  23, 
'15,  7352.    Mayaguez  Mesa,  June  29  ,'15,  7558. 
On  Plumiera  krugii  Urb. 

Maricao,  July,  19,  '15,  8818. 

These  specimens  conform  perfectly  with  type  material  kindly  sup- 
plied by  Dr.  Spegazzini. 

The  most  distinctive  characters  are  the  regularly  shaped,  capitate 
hyphopodia  and  the  black,  truncate  setae. 

71a.    Meliola  tabernaemontanae.   var.  forsteroniae  var.  nov. 

The  specimens  on  Forsteronia  agree  with  the  type  quite  closely, 
but  present  constant  differences  in  the  setae  and  capitate  hyphopodia 
as  follows :  The  setae  are  long,  about  700/x,  and  taper  to  an  acute  apex. 
The  capitate  hyphopodia  are  larger  and  more  angular  than  in  the  type. 
On  Forsteronia  corymhosa  (Jacq.)  Mey. 

Utuado,  4682  (type). 

72.    Meliola  ambigua  Pat.  and  Gaill. 

Bull  Soc.  Myc.  de  Fr.  4:  104,  1888. 
On  Lantana  odorata  L. 

Quebradillas,  June  20,  '15,  7268,  7267. 


519]  MELIOLA  IN  PORTO  RICO  — STEVENS  51 

On  Lantana  camara  L. 

Dos  Bocas,  below  Utuado,  July  8,   '15,  8016,  8025.    Eio  Arecibo, 
K.  64.7,  July  8,  '15,  7806. 
On  Lantana  sp. 

Quebradillas,  Nov.  22,  '13,  5008.  Dos  Bocas,  below  Utuado,  Dec. 
17,  '13,  6052,  Dec.  17,  '30,  '13,  6870. 

73.    Met  .TOLA  pstchotriae  Earle 

Bull.  N.  Y.  Bot.  Gard.  3:  308,  1905. 
On  Erithalis  fruticosa  L. 

Quebradillas,  Aug.  10,  '15,  9240,  9229.    Mona  Island,  Dec.  20,  '13, 
6082,  6138,  6254.     Guayanilla,  July  14,   '15,  8599.     Also  collected  by 
Heller  on  this  host,  Jan.  19,  1900,  No.  6430,  and  on  Psychotria  sps.,  near 
Ponce,  Dec.  9,  1902. 
On  Gonzalagunia  spicata  (Lam.)  G.  Maza. 

Sabana   Liana,   Aug.    13,  '15,  9371.    Miradero,  Aug.  4,  '15,  9134. 
Mayaguez,  June  24,  '15,  7388,  July,  '15,  7910,  June  14,  '15,  7044,  7046. 
Vega  Baja,  Aug.  — ,  '15,  9271.    Eio  Arecibo,  K.  64.7,  July  8,  '15,  7793. 
Mayaguez  Mesa,  June  29,  '15,  7592. 
On  Randia  aculeata  L. 

Quebradillas,  June  20,  '15,  7301,  Nov.  22,  '13,  4985.  Florida  Aden- 
tro,  July  1,  '15,  7757.  Hormigueros,  June  23,  '15,  7351.  Monacillo, 
Aug.  12,  '15,  9353. 

The  specimens  on  this  host  show  slight  differentiation  in  the  hypho- 
podia  and  setae. 
On  Chdococca  alba  (L.)  Hitch. 

Mayaguez  Mesa,  June  25,  '15,  7467.    Rio  Tanama,  July  6,  '15,  7859. 
Martin  Peiia,  Aug.  11,  '15,  9299.    Hormigueros,  June  23,  '15,  7325. 
On  Guettarda  ovalifolia  Urb. 

Maricao,  Jan.  10,  '12,  234. 
On  Borreria  laevis  (Lam.)  Griseb. 

El  Alto  de  la  Bandera,  July  14,  '15,  8593,  8598.    Dos  Bocas,  below 
Utuado,  July  8,  '15,  8090. 
On  Borreria  ocimoides  DC. 

One  specimen  with  no  data. 
On  Ruhiaceae  indet. 

Guayanilla,  July  14,  '15,  8550,  8546. 

I  find  this  species  also  on  Exostema  caribaceum  (Jacq.)  R.  and  Sch. 
collected  in  Santo  Domingo  by  Taylor,  No.  483. 

74.    Meliola  matepeicola  sp.  nov. 

Colonies  epiphyllous,  circular,  punctiform,  1-2  mm.  in  diam.  My- 


52  ILUNOIS  BIOLOGICAL  MONOGRAPHS  [520 

celium  black,  forming  a  very  close  network,  9/i  in  diameter,  branches 
mostly  opposite. 

Capitate  hyphopodia  large,  alternate,  close,  1  per  ceU,  cells  about 
20/1  long,  head  cell  pyriform,  24  x  17/i,  the  basal  7/x  long.  Mucronate 
hyphopodia  few,  alternate  or  opposite,  bottle-shaped,  crooked,  narrow, 
16-18  X  6/1.  Perithecial  setae  none.  Mycelial  setae  few,  straight  or 
slightly  curved,  150  x  7/i,  dark  throughout,  tip  obtuse. 

Perithecia  lOO-119/i,  slightly  rough,  with  conic  projections. 

Asci   soon  evanescent;  ascospores  4-septate,  brown,  very  slightly 
constricted,  obtuse,  34  x  14/i. 
On  Mayepea  domingensis  Krug  and  Urb. 

Mayaguez  Mesa,  June  29,  '15,  7556  (type).  Maricao,  Apr.  3,  '13, 
822. 

The  distinctive  characters  of  this  species  are  close,  dense,  small 
colony  and  thick  capitate  hjT)hopodia.  The  setae  are  sometimes  very 
scant  and  may  perhaps  be  entirely  wanting.  ^Most  leaves  which  bear 
this  fungus  are  infested  with  M.  mayepeae  also,  but  the  two  are  readily 
separable  by  the  naked  eye. 

75.    I^Ieliola  clusiae  sp.  nov. 

Colonies  hypophyllous,  irregular,  diffuse,  3-5  mm.  in  diam.  Mycelium 
brown,  8/i  thick,  nearly  straight,  branching  mostly  opposite. 

Capitate  hyphopodia  alternate,  1  per  cell,  cells  about  30/i  long. 
Head  cell  ovate  to  elliptical,  more  rarely  cylinder  or  irregular,  20  x  14/i, 
stalk  cell  2-4/t  long.  Mucronate  hyphopodia  scattered,  20  x  7/i,  bottle- 
shaped.  Perithecial  setae  none.  Mycelial  setae  few,  800  x  lO/i  at  base, 
tips  obtuse,  brittle,  usually  broken,  mostly  clustered  around  the  peri- 
thecia. 

Perithecia  apparently  dimidiate,  with  an  areola  of  radiating  hyphae. 
Spore  61  x  20/i,  strongly  constricted,  obtuse,  cylindrical. 
On  Clusia  minor  L. 

El  Alto  de  la  Bandera,  July  15,  8571,  July  15,  '15,  8283  (type). 

Section  F. 

Spores  4-septate,  no  perithecial  setae  or  appendages,  mycelial  setae 
simple,  uncinate.    There  are  only  two  species  known  in  Porto  Rico. 

Key  To  Species  of  Section  F. 

Capitate  hyphopodia  crowded  M.  guareieola  No.  76 

Capitate  hyphopodia  not  crowded  M.  tecomae  No.  77 


521]  MELIOLA  IN  PORTO  RICO  — STEVENS 


53 


76.    Meuola  guareicola  sp.  nov. 

Colonies  epiphyllous,  circular,  punctiform,  1-4  mm.  in  diam.,  black. 
Mycelium  dense,  forming  a  close  mat  of  threads  which  readily  sepa- 
rates as  a  whole  from  the  substratum. 

Capitate  hyphopodia  alternate  or  irregular,  crowded,  head  cell 
globular,  ovoid  or  pyriform,  14  x  10/i,  the  basal  cell  2-3/t  long.  Mucro- 
nate  hyphopodia  alternate  or  opposite,  bottle-shaped,  the  neck  narrow, 
16-18  X  7fi.  Perithecial  setae  none.  Mycelial  setae  numerous,  forming- 
a  dense  mat  covering  the  colony  to  the  edge,  200-300/i  long,  7/t  thick,, 
dark,  pale  at  tip,  upper  part  strongly  coiled  or  twisted.     Tip  acute. 

Perithecia  small,  100-500;^,  distinctly  ostiolate.  Asci  soon  evanes- 
cent ;  ascospores  4-septate,  brown,  slightly  constricted,  obtuse,  37  x  lO/i. 
On  Ouarea  trichilioides  L. 

Las  Marias,  July  10,  '15,  8166  (type),  July  11,  '15,  8245.    Maya- 
guez  Mesa,  June  25,  '15,  7464.     Ad  juntas,  Nov.  22,   '13,  4971.     Monte 
de  Oro,  near  Cayey,  Dec.  3,  '13,  5737.    Dos  Bocas,  below  Utuado,  July  8 
'15,8096.  ^    ^ 

This  species  is  usually  associated  with  M.  guareae  from  which  it  is 
readily  distinguished  by  its  uncinate  hairs. 

77.    Meliola  tecomae  sp.  nov. 

Colonies  amphigenous,  mainly  epiphyllous,  circular,  2-5  mm.  in 
diam.  Mycelium  black,  forming  a  close  network  of  threads,  l/x  in  diame- 
ter, branches  mostly  opposite. 

Capitate  hyphopodia  alternate,  not  crowded,  1  per  cell,  cells>  about 
35/Li  long,  head  cell  ovoid,  17  x  13/t,  the  basal  cell  6-10/u.  long.  Mucronate 
hyphopodia  opposite,  irregularly  conic,  16-18  x  6fi,  no  well  differentiated 
neck.  Perithecial  setae  none.  Mycelial  setae  abundant,  broadly  curved 
into  a  large  hook  at  the  end,  170  x  lOfx,  dark  throughout,  tip  obtuse. 

Perithecia  170^,  slightly  rough  with  rounded  protuberances.    Asci 
soon  evanescent;  ascospores  4-septate,  brown,  very  slightly  constricted, 
obtuse,  44  x  17/t. 
On  Tecoma  pentaphylla  (L.)  Juss.     Fig.  48. 

Martin  Pena,  Aug.  11,  '15,  9332  (type),  Mayaguez,  June  24,  '15, 
7396,  7078.  Las  Marias,  July  10,  '15,  8177.  Maricao,  July  20,  '15,  8960. 
On  Tecoma  sp. 

El  Miradero,  Aug.  4,  '15,  9163.  Las  Marias,  March  22,  '13,  359S, 
Mayaguez,  Oct.  31,  '13,  3950.  Maricao,  Nov.  18,  '13,  4804.  Quebra- 
dillas,  Nov.  22,  '13,  4978,  4981.  Vega  Baja,  Nov.  5,  '13,  43108i.  Arecibo- 
Lares  Road,  Jan.  21,  '14,  6790. 

The  distinguishing  character  is  the  long,  broadly  curved  or  hooked^ 


54  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [522 

black,  setae.  They,  in  general,  resemble  those  figured  by  Gaillard  for 
M.  halansae  or  M.  intermedia,  but  the  agreement  goes  no  further.  There 
is  a  strong  superficial  resemblance  to  M.  pazschkeana,  but  the  two  are 
readily  distinguished  by  their  very  different  mucronate  hyphopodia. 

A  specimen  on  Tecoma  which  I  have  not  seen,  labelled  M.  pazsch- 
keana, in  the  Bronx  herbarium  may  possibly  belong  here. 

Section  G 

Spores  4-septate,  no    perithecial   appendages,  mycelial   setae    both, 
simple  and  forked. 

Key  to  Species  of  Section  G^ 

Capitate  hyphopodia  opposite  M.  ipomoeae  No.  78 

Capitate  hyphopodia  not  usually  opposite 

Setae  very  long,  1000/x  M.  guareae  No.  79 

Setae  shorter 

Capitate  hyphopodia  very  narrow,  scarcely 

thicker  than  the  stalk  cell  M.  magnoliae  No.  80 

Capitate  hyphopodia  thicker 

Head  cell  nearly  globular  M.  bicornis  No.  95 

Head  cell  more  or  less  elongated 

Capitate  .hyphopodia  often  opposite     M.  smilacis  No.  81 
Capitate  hyphopodia  alternate 
Head  cell  regular  M.  helleri  No.  82 

Head  cell  irregular 

Setae  sometimes  forked  M.  mangiferae  No.  83 

Setae  merely  denticulate  M.  denticulata  No.  84 

78.    IVIeliola  ipomoeae  Earle  (Not  M.  ipomoeae  Kehm-) 

Muhlenbergia  1 :  10,  July  1901. 
On  Ipomoea  cathartica  Poir. 

Las   Marias,    July   10,  '15,  8183.    Yega   Baja,  July   2,  '15,  7729. 
El  Alto  de  la  Bandera,  July  16,  '15,  8692. 
On  Ipomoea  tUiacea  (W.)  Choisy. 

Anasco,  Oct.  12,  '13,  3506.    Mayaguez,  Oct.  31,  '13,  3909. 
On  Ipomoea  sps.     Fig.  49. 

El  Miradero,  Aug.  4,  '15,  9160.    Dos  Bocas,  below  Utuado,  July  8, 


^M.  stenotaphri  which  very  rarely  has  bifid  setae  is  to  be  found  in  section  R. 

^The  use  of  this  specific  name  by  Rehm  (Ann.  Myc.  12:  171,  1914)  is  clearly 
invalidated  by  the  prior  use  by  Earle  and  M.  ipomoeae  Rehm  becomes  M.  ipomoeae- 
phile  Rehm,  in  lit. 


523]  MELIOLA  IN  PORTO  RICO  — STEVENS  IS 

'15,  8083.  Dee.  30,  '13,  6563.  Rosario,  No.  4810.  Marieao,  July  19, 
'15,  8784,  9001. 

The  type  was  collected  near  Mayaguez  by  Heller,  No.  4358,  in  1900. 
A  specimen  from  the  Bronx  Garden,  No.  6258,  determined  by  Earle, 
shows  the  capitate  hyphopodia  to  be  almost  exclusively  opposite.  Al- 
though this  character  is  not  mentioned  by  Earle  in  his  description  it 
appears  to  me  to  be  the  most  distinctive  feature  of  the  species.  The 
perithecia  instead  of  being  * '  few,  2-4, ' '  as  described,  are  very  numerous, 
20+  per  colony.  The  forward  angling  of  the  hyphopodia  appears  to 
me  to  be  a  variable  character. 

This  fungus  frequently  grows  upon  the  same  leaf  with  M.  clavulata 
which  it  resembles  very  closely,  with  the  exception  of  the  setal  tips 
and  the  arrangement  of  the  capitate  hyphopodia. 

79.    Meliola  guareae  Speg. 

Ann.  d.  Mus.  Nac.  de.,  Buenos  Aires,  23 :  42,  1912. 
On  Guarea  trichUioides  L. 

Las  Marias,  July  10,  '15,  8166  (type).  Dos  Bocas,  below  Utuado, 
July  8,  '15,  8096.  Monte  de  Oro,  Dec.  3,  '13,  5737.  Adjuntas,  Nov.  22, 
'13,  4971.  Jajome  Alto,  Dec.  3,  '13,  5691.  Mayaguez  Mesa,  June  25, 
'15,  7464.  Usually  associated  with  M.  guareicola  but  on  the  lower  side 
of  the  leaves. 

These  specimens  differ  from  the  type,  which  was  sent  to  me  by 
Dr.  Spegazzini,  in  that  they  have  larger  hyphopodia,  more  abundant 
setae,  and  in  minor  colony  characters,  especially  in  density  of  growth. 
The  setae  with  forked  tips  are  rare  and  the  fact  that  this  character  was 
not  mentioned  by  Spegazzini  is  not  significant. 

80.    Meliola  magnoliae  sp.  nov. 

Colonies  hypophyllous,  irregular,  3-20  mm.  in  diam.,  black.  My- 
celium forming  a  very  loose  network  of  threads,  7/*  in  diameter. 

Capitate  hyphopodia  alternate  or  irregular,  distant,  about  45/i 
apart,  head  cell  cylindrical,  very  little  thicker  than  the  stalk  cell, 
straight  or  somewhat  curved,  obtuse,  the  basal  cell  about  7/u.  long. 

Mucronate  hyphopodia  opposite  or  irregular,  almost  cylindrical  to 
slightly  bottle-shaped,  20/t  long.  Perithecial  setae  none.  Mycelial  setae 
few,  about  700/*  long,  straight  or  slightly  curved,  opaque.  Tip  acute, 
simple  or  occasionally  forked,  with  short  teeth. 

Perithecia  200/i,  in  diam.,  slightly  rough  with  rounded  protuber- 
ances, ostiole  none.  Asci  soon  evanescent;  ascospores  4-septate,  dark 
brown,  very  strongly  constricted,  obtuse,  51  x  20/t. 


56  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [524 

On  Magnolia  porioricensis  Bello.     Fig.  50. 

Monte  Alegrillo,  near  Maricao,  Nov.  14,  '13,  4738  (type). 

This  species  is  remarkable  for  the  slight  differentiation  of  its  capi- 
tate and  mucronate  hyphopodia  which  differ  from  each  other  but  little 
and  also  verj^  much  resembles  branches,  though  of  determinate  growth. 
This  is  evidently  one  of  the  most  primitive  forms  in  the  genus. 

81.    Meliola  smilacis  sp.  nov. 

Colonies  amphigenous  but  more  abundant  above,  circular,  irregular, 
2-4  mm.  in  diam.  Mycelium  not  crooked,  of  medium  density,  branches 
opposite. 

Capitate  hyphopodia  alternate,  opposite  or  unilateral,  head  cell 
cylindrical  to  globular,  14  x  llfi,  stalk  cell  short,  about  4/x.  Mucronate 
hyphododia  rare,  conical,  neck  short  and  tapering,  or  ampulliform  with 
neck  longer.  Mycelial  setae  abundant,  about  500/t  high,  tapering,  lO/x. 
thick  at  base,  apex  obtuse,  rarely  bifid,  pale,  base  opaque. 

Perithecial  setae  or  appendages  none.     Perithecia  about  200/i  in 
diam.    Ostiole  a  mere  thinning  of  the  apical  region.    Asci  soon  evanes- 
cent, short  type.     Spores  4-septate,  but  slightly  constricted,  ends  ob- 
tuse, 15  X  17/1. 
On  SmUax  coriacea  Spreng. 

Manati,  Nov.. 25,  '13,  5261  (type). 
On  SmUax  sp.  indet. 

Jajome  Alto,  July  17,  '15,  8429. 

The  two  hosts  appear  to  be  quite  different  but  it  is  possible  that  the 
latter  specimen  is  a  form  of  S.  coriacea. 

This  Meliola  belongs  to  the  group  of  M.  amphitricha  from  which 
it  is  distinguished  by  its  ostiole,  which  is  however,  very  difficult  of  ob- 
servation, by  the  sometimes  forked  tips  of  the  mycelial  setae  and  by  the 
capitate  h}T)hopodia. 

82.     Meliola  helleri  Earle 

Bull.  N.  Y.  Bot.  Card.  3 :  307,  1905. 

The  type  is  on  an  "unknown  woody  plant  perhaps  belonging  to 
the  Myrtaceae",  Heller  No.  6251,  3  miles  west  of  Ponce,  Dec.  9,  1902. 

The  setae  in  the  cotype  specimen  which  I  examined  were  more  fre- 
quently simple  than  forked  as  called  for  in  the  description. 
On  Eugenia  stahlii  (Kiaer.)  K.  and  Urb. 

Luquillo  Forest,  Dec.  4,  '13,  5343.  El  Alto  de  la  Bandera,  July  15, 
'15,  8665.    Jajome  Alto,  July  17,  '15,  8436. 

The  specimens  are  much  overgrown  by  parasites.  Setae  were  seen 
upon  one  specimen,  but  all  were  simple. 


525]  MELIOLA  IN  PORTO  RICO  — STEVENS  57 

On  Eugenia  monticola  (Sw.)  P.  DC. 

Manati,  Nov.  5,  '13,  4285. 
On  Myrcia  deflexa  (Poir)  P. 

El  Alto  de  la  Bandera,  July  14,  15,  8268,  8268,  8672. 

This  collection  is  heavily  overgrown  by  parasites  and  the  determina- 
tion is  therefore  not  fully  reliable.    The  typical  setae  were  not  seen  but 
the  character  of  the  mycelium  and  capitate  hyphopodia  were   those 
of  M.  helleri. 
On  Myrcia  splendens  (Sw.)  P.  DC. 

Jajome  Alto,  Dee.  3,  '13,  5646. 

83.  Meliola  mangiperae  Earle 

Bull.  N.  Y.  Bot.  Card.  3:  307,  1905. 
On  Mangifera  indica  L. 

Mayaguez,  Aug.  5,  '15,  9478,  Jan.  8,  '14,  6723,  June  16,  '15,  7109. 
Vega  Baja,  Feb.  23,  '13,  440.  Manati,  Nov.  5,  '13,  4300.  Luquillo 
Forest,  Dec.  2,  '13,  5558,  5428.  El  Gigante,  near  Adjuntas,  Dec.  15,  '13, 
6016.    Collected  also  by  Heller,  No.  6393,  near  Rio  Piedras,  Jan.  9,  1903. 

In  many  cases  the  colonies,  particularly  epiphyllous  colonies,  lack 
the  usual  velvety  appearance,  have  few  setae,  a  loose  mycelium  instead 
of  the  dense  mycelium,  and  lack  the  numerous  hairs  that  characterize  the 
large  black  hypophyllous  blotches.  The  forking  of  the  setae  seems  to  be 
the  exception  rather  than  the  rule. 

84.  Meliola  denticulata  Wint. 

Gaillard,  Le  Genre  Meliola :  98,  1892. 
On  Boystonea  horinquena  Cook. 

Arecibo-Lares  Road,  June  21,  '15,  7279. 

Section  H 

Spores  4-septate,  no  perithecial  appendages,  mycelial  setae  forked. 

Key  to  Species  of  Section  H 

Apical  branches  strongly  divergent,  well-developed 
Primary  branches  at  nearly  right  angles 
Primary  branches  long,  15-|-/i 
Secondary  branches  well  developed  M.  cucurbitacearum 

No.  85 
Secondary  branches  merely  toothed  M.  furcata  No.  86 

Primary  branches  short,  4-10/i.  M.  hessii  No.  87 

Primary  branches  not  at  right  angles 


58  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [526 

Primary  branches  short,  18/i  M.  piperis  No.  88 

Primary  branches  longer 

Capitate  hyphopodia  mostly  opposite 
Secondary  and  tertiary  branches  well 

developed  M.  quadrispina  No.  89 

Tertiary  branches  often  not  developed  M.  philodendri  No.  90 
Capitate  hyphopodia  alternate  M.  merrillii  No.  91 

Apical  branches  merely  teeth  or  not  strongly 
divergent 
Apical  teeth  crowded,  forming  a  crest  M.  gaillardiana  No.  92 

Apical  teeth  not  crowded  to  form  a  crest 
Setae  very  dark 

Setae  about  400/i,  long,  hyphopodia 

largely  opposite  M.  dieffenbachiae  No.  93 

Setae  about  300/i,  long  M.  bidentata  No.  94 

Setae  translucent  M,  bicornis  No.  95 

85.    Meliola  cucurbitacearum  sp.  nov. 

Colonies  epiphyllous,  circular,  1-3  mm.  in  diam.  On  leaves  and 
stems.  Mycelium  black,  forming  a  rather  close  network,  7/t  in  diameter, 
branches  mostly  alternate. 

Capitate  hyphgpodia  alternate,  not  crowded,  1  per  cell,  cells  about 
17  to  24/A  long,  head  cell  ovoid,  lobed,  17  x  14/x,,  the  basal  cell  7/t  long. 
Mucronate  hyphopodia  alternate  or  opposite,  bottle-shaped,  20  x  5/*, 
neck  narrow  and  crooked.  Perithecial  setae  none.  Mycelial  setae  abun- 
dant in  the  older  parts  of  the  colony,  190  x  9/u,,  dark  throughout.  Tip 
once  or  twice  dichotomous,  branches  standing  at  nearly  right  angles  to 
the  main  axis,  primary  branches  15-35/1,  secondary  about  the  same, 
apices  acute.  Perithecia  120/x,  rough  with  rounded  protuberances.  Asci 
soon  evanescent ;  ascospores  4-septate,  brown,  slightly  constricted,  obtuse, 
41  X  14/Li.  On  leaves  and  stems  of  an  unknown  Cucurb,  probably 
Cayaponia. 

El  Alto  de  la  Bandera,  July  16,  '15,  8732  (type).     Fig.  51. 

The  species  is  readily  recognized  by  its  characteristic,  once  or  twice 
dichotomous  setae  and  its  lobed  capitate  hyphopodia. 

86.    Meliola  furcata  Lev. 

Ann.  Sc.  Nat.  266,  1846. 
On  Coccothrinax  alta  (Cook)  Becc. 

Dos  Bocas,  below  Utuado,  Dec.  17,  '13,  6060. 
On  Acrista  monticola  Cook. 

El  Alto  de  la  Bandera,  8303  a.    LuquiUo  Forest,  Dec.  4,  '13,  5400. 


527]  MELIOLA  IN  PORTO  RICO  — STEVENS  59 

On  Thrinax  ponceana  Cook. 

Guayanilla,  July  14,  15,  8590,  8017,  July  26,  '15,  9074. 
On  Thrinax  praeceps  Cook. 

Dos  Bocas,  below  Utuado,  July  8,  15,  8017. 
On  Macrodiscus  lactiflorus  (Vahl.)  Bur.^ 

Coamo,  Apr.  6,  13,  850  a. 

87.  Mfjjola  HESsn  sp.  nov. 

Colonies  epiphyllous,  irregular,  orbicular,  2-3  mm.  in  diam.  Cen- 
ters denuded  when  old.  Mycelium  straight,  forming  a  close  network 
of  threads,  branches  mostly  opposite,  7/x  in  diameter. 

Capitate  hyphopodia  opposite,  crowded,  about  ll/x  apart,  head  cell 
pyriform,  7  x  10/i,  the  basal  cell  3/*  long.  Mucronate  hyphopodia  oppo- 
site, bottle-shaped.  Perithecial  setae  none.  Mycelial  setae  erect,  rigid, 
not  very  numerous,  uniformly  about  190ju,  high,  8/t  thick.  Tip  divided 
dichotomously,  once,  twice  or  thrice,  into  short  branches  which  stand 
out  nearly  at  right  angles  to  the  main  stalk.  Setal  branches  about  15/* 
long. 

Perithecia  150/*,  minutely  rough.    Asci  soon  evanescent,  4-spored; 
ascospores  4-septate,  brown,  slightly  constricted,  obtuse,  41  x  14/*. 
On  Paullinia  pinnata  L.     Fig.  52. 

Sabana  Liana,  Aug.  13,  15,  9367  (type).  .Mayaguez,  May  4,  13, 
1207\i. 

Named  in  honor  of  Mr.  W.  E.  Hess  who  collected  largely  in  Porto 
Rico. 

The  species  is  remarkable  for  its  straight,  rigid  setae  of  character- 
istic branching.  Its  characters  are  so  marked  that  it  is  separated  readily 
by  the  naked  eye  from  the  other  species  on  Paullinia. 

88.  Meliola  piperis  Earle 

Muhlenbergia  1 :  July  1901,  12. 
On  Piper  adunctum  L. 

Dos  Bocas,  below  Utuado,  July  7,  15,  7964.    Las  Marias,  July  10, 


^The  determinations  of  the  Meliolas  on  Palms  were  all  made  by  Mr.  W.  E. 
Pickler,  who  has  made  a  special  study  of  the  variability  of  the  setal  tips  of 
M.  furcata. 


tie  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [528 

'15,  8603.    Maricao,  April  3,  '13,  758.    Monte  de  Oro,  near  Cayey,  Dec. 
3,  '13,  5678. 

The  type  was  collected  by  Heller  on  P.  adunctum  near  Mayaguez, 
Jan.  1900,  No.  4359  b. 

89.    Meliola  quadrispina  Rac. 

Parasit.  Algen.  u.  Pilze,  Javas,  III,  33,  1900. 

Meliola  quadrifurcata  Rehm.    Leaflets  of  Philippine  Bot,  6:  2194, 
1914. 
On  Ipomoea  cathartica  Poir.    Fig.  53. 

Las  Marias,  July  10,  '15,  8163.  • 

In  general  aspect  of  the  colony  and  in  the  shape  of  the  hyphopodia 
there  is  a  striking  similarity  among  the  three  species  above  recorded  on 
the  Convolvulaceae,  which  may  point  to  a  close  relationship  between 
them.  This  very  beautiful  species  differs  from  all  others  that  I  have 
seen  in  its  delicately  forked  setae,  which  are  indeed  the  striking  charac- 
ters of  the  colony.  Both  types  of  hyphopodia  are  strictly  opposite  though 
this  character  is  not  mentioned  in  the  original  description. 

90.    Meliola  philodendri  sp.  nov. 

Colonies  chiefly  epiphyllous,  circular,  black,  1-5  mm.  in  diam., 
velvety.  Mycelium  coarse,  8/x,,  straight,  branches  opposite  at  uniform 
angles,  setigerous  close  to  the  margin  of  the  colony. 

Capitate  hyphopodia  mostly  opposite,  about  20-30/a  apart,  stalk  cell 
short,  Sfi,  head  cell  oval,  not  angular,  10  x  14)u,.  Mucronate  hyphopodia 
scarce,  ampuUiform,  alternate  or  opposite,  often  crowded,  mycelial  setae 
long,  230-300/i.,  black,  at  base  about  9/i  thick,  dichotomous,  forking  three 
or  more  times,  ultimate  branches  acute,  branches  about  120ju,  long. 

Perithecia  about  185/a  in  diam.     Spores  cylindrical,  obtuse,  4-sep- 
tate,  only  slightly  constricted,  48-54  x  15-20/x,.     Spores  sometimes  nar- 
rower and  much  constricted,  becoming  moniliform  in  appearance. 
On  Philodendron  krehsii  Schott.     Fig.  54. 

Arecibo-Lares  Road,  June  21,  '15,  7225  (type).  Jayuya,  March  2, 
'13,  377,  Mch.  1,  '13,  437.  Ponce,  Nov.  8,  '13,  4346.  Jajome  Alto,  July 
17,  '15,  8424.  Maricao,  July  20,  '15,  8994.  El  Alto  de  la  Bandera, 
July  16,  '15,  8712. 

The  long,  branching,  dichotomous  setae,  together  with  the  opposite 
hyphopodia  distinguish  this  species.  The  species  is  a  conspicuous  one 
and  is  of  common  occurrence  in  Porto  Rico  wherever  the  host  is  found. 


529]  MELIOLA  IN  PORTO  RICO  — STEVENS  61 

91.    MetjoLxN.  merrillh  Syd. 

PhU.  Jour.  Sc.  8  C  6:  479,  1913. 
On  Cissus  sicyoides  L. 

San  German,  Dec.  12,  '13,  5846,  Nov.  8,  13,  5789,  5788.  Lares, 
Nov.  22,  '13,  4841.  Utuado,  Nov.  8,  '13,  4418,  4398.  Villa  Alba,  Jan. 
3,  '12,  101.  El  Gigante,  near  Adjuntas,  Dec.  15,  '13,  5819.  Dos  Bocas, 
below  Utuado,  Dec.  17,  '13,  6063,  July  8,  '15,  8101,  July  7,  '15,  7968. 
Anasco,  Oct.  12,  '13,  3565.  Aguada,  Nov.  22,  '13,  5102.  Yauco,  Oct. 
3,  '13,  3145,  3143.  Mayaguez,  Oct.  31,  '13,  3948,  3910.  Rio  Tanama, 
July  6,  '15,  7913.    Manati,  July  2,  '15,  7690. 

The  type  is  on  Cissus  leaves  collected  in  Luzon  by  Merrill.  A  co- 
type  specimen  was  kindly  sent  to  me  by  Doctor  Merrill,  also  by  Dr. 
H.  Sydow,  and  comparison  clearly  verifies  the  determination,  though 
there  are  certain  minor  differences.  In  particular,  the  mycelium  in  the 
Porto  Rican  specimens  is  much  more  dense  and  luxuriant. 

92.    Meliola  gaillardiana  sp.  nov. 

Colonies  epiphyllous,  small,  circular,  1-2  mm.  in  diam.,  black;  my- 
celium irregular,  crooked,  forming  a  very  close,  dense  network  of  threads 
about  9/i,  thick,  cells  about  14/li  long. 

Capitate  hyphopodia  small,  alternate  or  irregular,  crowded,  about 
7-17/Li  apart,  ovoid,  pyriform  or  curved,  10/x  in  diam.,  the  basal  cell  5-6ju, 
long.  Mucronate  hyphopodia  few  and  scattered,  alternate  or  opposite, 
bottle-shaped,  the  neck  narrow.  Mycelial  setae  abundant,  straight,  rigid, 
220/i  long,  10/i,  thick,  opaque;  at  tip  bearing  a  crest,  about  17-34/x,  of 
short,  acute  spines ;  sometimes  forking  below  this  crest.  Perithecial  setae 
none. 

Perithecia  170/x  in  diam.,  slightly  rough  with  rounded  protuber- 
ances of  small,  6/i,,  subprominent  cells,  ostiole  none.    Asci  soon  evanes- 
cent; ascospores  4-septate,  brown,  very  slightly  constricted,  obtuse,  ter- 
minal cells  longer  than  the  others,  3  x  14/t. 
On  Piper  adunctum  L.     Fig.  55. 

Rio  Arecibo,  July  8,  '15,  7794  (type),  7796.  Dos  Bocas,  below 
Utuado,  July  8,  '15,  8044,  Dec.  30,  '13,  6802.  Las  Marias,  July  11,  '15, 
8223. 

The  crests  at  the  apices  of  the  mycelial  setae  are  very  distinctive. 
They  seem  to  be  due  to  a  very  close,  dichotomous  branching.  The  form 
is  most  nearly  related  to  M.  piperis  but  is  separated  from  that  species 
by  the  setal  tips  and  the  density  of  mycelium.  It  differs  much  from 
M.  pululahuensis  in  its  mycelial  tips.  The  difference  from  M.  patouUlardi 
is  less,  still  the  form  appears  to  be  distinct  from  both. 


62  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [530 

Named  in  honor  of  A.  Gaillard  in  recognition  of  his  extensive  studies 
of  the  genus  Meliola. 

93.    Meliola  dieffenbachl^  sp.  nov. 

Colonies  amphigenous  with  a  tendency  to  be  more  numerous  above 
but  larger  below,  1-5  mm.  in  diam,,  black,  velvety. 

Mycelium  branches  usually  opposite  at  uniform  angles  forming  a 
rather  dense  mat.  Capitate  hyphopodia  alternate  or  opposite,  oblong, 
spherical  or  curved,  basal  cell  4/*  long,  head  cell  10-14/Lt.  Mucronate 
hyphopodia  few,  alternate  or  opposite.  Mycelial  setae  rigid,  black, 
straight,  about  400/a  long,  short  branched  or  merely  toothed  apex.  Teeth 
of  varying  number  and  size.  Perithecial  setae  or  appendages  none. 
Asei  soon  evanescent,  2-4-spored.  Spores  cylindrical,  40  x  14ju,,  4-septate, 
ends  obtuse,  slightly  constricted  at  the  septa,  end  cells  rather  larger  than 
the  others. 

Perithecia  grouped  in  center  of  colony,  numerous,  140-170/t  in  diam. 
On  Dieffenhachia  sequine  (Jacq.)  Schott.     Fig.  56. 

Las  Marias,  July  10,  15,  8148  (type),  8210.  Maricao,  Oct.  18,  '13, 
3889,  July  19,  '15,  8851.  Catano,  July  2,  '15,  7707.  Lajas,  June  17, 
'15,  7155.  Monte  de  Oro,  near  Cayey,  Dec.  3,  '13,  5666,  5731.  Dos 
Bocas,  below  Utuado,  July  8,  '15,  8074,  8077.  Mayaguez,  June  24,  '15, 
7420. 

This  differs  strikingly  from  M.  phUodendri  in  the  branching  of  its 
setae.  It  resembles  M.  fuscidula  but  differs  from  it  in  the  character  of 
the  setae. 

94.  Meliola  bidentata  Cke. 

Grev.  11 :  37,  1882.  . 
On  Tecoma  pentaphylla  (L.)  Juss. 

Guanajibo,  June  19,  '15,  7202,  9002.    Hormigueros,  K.  7,  June  23, 
'15,  7347. 
On  Tdbebuia  haemantha  (B.)  Gris. 

Monte  Alegrillo,  4716. 
On  unknown  dicot,  St.  Ana,  July  1,  '15,  7621,  7633. 

The  above  named  specimens  were  compared  with  and  agree  with  a 
specimen  obtained  from  the  Kew  Gardens.  (Ravenel  Fung.  Amer. 
Exs. — ^No.  330,)  there  labeled  ''M.  furcata,  Lev."  but  also  labeled  in 
Cooke's  writing  **not  furcata  Lev.  but  bidentata  Cke.    M.C.C." 

95.  Meliola  bicobnis  Wint. 

Hedw.  26 :  99,  1886. 
On  Meihomia  axillaris  (Sw.)  0.  Ktz.    Fig.  57. 


531]  MELIOLA  IN  PORTO  RICO  — STEVENS  63 

Florida  Adentro,  July  1,  '15,  7653.    Las  Marias,  July  10,  '15,  8179. 
Mayaguez,  June  24,  15,  7395.    Rio  Arecibo,  K.  64.7,  July  8,  '15,  7791. 
Rio  Tanama,  July  6,  '15,  7838. 
On  Meihomia  adscendens  (Sw.)  Kuntz. 

El  Alto  de  la  Bandera,  July  15,  '15,  8531,  8648. 
On  Meibomia  supina  (Sw.)  Britt. 

Cataiio,  Dec.  3,  '13,  4532.  Martin  Pefia,  Aug.  11,  '15,  9309.  Mari- 
cao,  July  19,  '15,  8793,  July  20,  '15,  8975.  Vega  Baja,  July  2,  '15, 
7750.  Mayaguez,  July  3,  '15,  8094.  Florida  Adentro,  July  15,  '15, 
7666.  Rio  Tanama,  July  6,  '15,  7854.  Dos  Bocas,  below  Utuado,  July 
8,  '15,  8022.  El  Gigante,  near  Adjuntas,  Dec.  15,  '13,  5820.  Indiera 
Fria,  Oct.  8,  '13,  3370. 
On  Dalhergia  monetaria  L.  fil. 

Mayaguez  Mesa,  June  25,  '15,  7476.    Arecibo-Lares  Road,  June  21, 
'15,  7243.    Maricao,  Sept.  20,  '13,  3658. 
On  Dalhergia  sps. 

Mayaguez  Mesa,  June  29,  '15,  7577.    Rosario,  Apr.  3,  '13,  711,  July 
4,  '15,  9016. 
On  Bradhurya  virginiana  O.  Ktz. 

Arecibo-Lares  Road,  June  21,  '15,  7242.    Manati,  July  2,  '15,  7694. 
Dos  Bocas,  below  Utuado,  July  8,  '15,  8043.    Vega  Baja,  July  2,   '15, 
7749.    Quebradillas,  Nov.  22,  13,  5036. 
On  Mimosa  ceratonia  L. 

Maricao,  July  20,  '15,  8899,  8868.  Rio  Arecibo,  K.  64.7,  July  8, 
'15,  7770.  Vega  Baja,  July  2,  '15,  7744.  Aibonito,  Nov.  3,  '13,  4020. 
On  Lonchocarpus  glaucifolius  Urb. 

Quebradillas,  June  20,  '15,  7264. 
On  Erythfina  micropteryx  Poepp. 

El  Miradero,  Aug.  11,  '15,  9166. 
On  Teramnus  uncinatus  (L.)  Sw. 

Maricao,  3503,  Jan.  10,  '12,  228.  Anasco,  Oct.  12,  '13,  3583,  3537. 
Yau^o,  Oct.  3,  '13,  3136. 

The  form  on  Teramnus,  Nos.  6554,  3583,  3503,  is  much  branched  at 
the  apices. 
On  Dolicholos  reticulatus  Millsp. 

Florida  Adentro,  July  1,  '15,  7682,  70(75.    Vega  Baja,  Nov.  5,  '13, 
4263.    Lares,  Nov.  22,  13,  4933.    Quebradillas,  Nov.  22,  13,  4982.    Bar- 
celoneta,  Aug.  10,  '15,  9259.    Rio  Tanama,  Aug.  6,  '15,  7875. 
On  an  unknown  Legume  by  Heller,  6259. 

This  series  of  specimens  on  the  various  hosts  shows  considerable 
variation,  particularly  as  to  setal  apices.  The  mycelium  and  the  capi- 
tate hyphopodia,  however,  are  quite  characteristic  and  I  am  therefore 


64  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [532 

inclined  to  include  all  of  these  forms,  growing  as  they  do  upon  members 
of  one  family,  in  one  single  species,  recognizing  as  varieties  such  as 
show  well-marked  and  constant  difference.  These  differences  are  usually 
in  the  setae,  which  on  some  hosts  are  almost  invariably  simple,  on  others 
slightly  toothed,  and  on  still  others  much  toothed  and  contorted. 

The  species  as  manifest  on  some  of  its  hosts  clearly  agrees  with 
M.  bicornis  Wint  of  Rabenhorst's  Fungi  Europaei,  No.  3545,  collected 
on  an  unknown  legume  in  Brazil,  May  1885 ;  with  an  authentic  specimen 
kindly  loaned  from  the  Kew  Gardens ;  with  a  specimen  of  the  Heller  col- 
lection determined  by  Earle  and  with  a  cotype  specimen  kindly  sent  to  me 
by  Dr.  H.  Sydow.  It  does  not,  however,  conform  to  the  description  of 
this  species  as  given  by  Gaillard,  or  the  original  description  of  Winter, 
in  that  the  capitate  hyphopodia  are  not  often  opposite,  as  they  describe, 
and  as  Gaillard  figures  them,  nor  are  the  setae  deeply  bifid  as  he  describes 
and  figures.  Since  the  original  description  was  by  Winter  and  the 
Brazilian  specimen  was  published  by  Winter,  and  our  specimen  is  clearly 
co-specific  with  the  Brazilian  specimen,  it  seems  best  to  regard  the  pres- 
ent series  as  M.  bicornis. 

On  Meibomia,  the  tips  are  either  acute  and  simple,  or  bifid  or 
toothed.  Some  collections  are  uniformly  simple,  others  uniformly 
toothed,  yet  the  species  appears  to  be  identical.  The  collections  on 
M.  adscendens  and  M.  axillaris  are  rarely  forked,  while  those  on  M.  supina 
are  rarely  undivided.  One  collection  on  M.  axillaris,  No.  7838,  how- 
ever showed  a  remarkable  variant,  with  much  and  very  irregularly 
forked  apices.  The  form  on  Erythrina  has  few  setae  and  these  sometimes 
contorted  at  the  tip.  The  specimens  on  Bradbury  a  show  the  capitate 
hyphopodia  somewhat  more  angular,  with  simple  and  unusally  bent 
setae. 

95a.    M.  BICORNIS  var.  calopogonu  var.  nov. 

On  Calopogonium  orthocarpum  Urb. 

Dos  Bocas,  below  Utuado,  July  8,  '15,  8060,  Dec.  16,  '13,  6035. 

Mayaguez,  Oct.  31,  '13,  3492,  Apr.  10,  '13,  372.  Aguada,  Nov.  22, 
'13,  5087. 

The  form  on  Calopogonium  shows  perhaps  greater  differentiation 
than  any  of  the  other  forms.  The  setae  are  more  rigid,  more  uniformly 
fine  toothed  and  the  capitate  hyphopodia  are  a  trifle  larger  than  on  other 
hosts. 


533]  MELIOLA  IN  PORTO  RICO  — STEVENS  65 

95b.    M.  BicOBNis  VAB.  GALACTiAE  var.  nov. 

On  Oalactia  duhia  P.  DC. 

Rio  Tanama,  July  6,  15,  7856  (type). 

The  form  on  Galactia  is  well  differentiated  with  large,  capitate 
hyphopodia  and  usually  with  divided  setae. 

/ 
Meliola  sp.  indet.     Mayaguez,  May  1,  '13,  No.  1067  on  a  legume 

said  by  Percy  Wilson  to  be  "possibly  a  narrow  leaved  form  of  Clitoria 

ruhiginosa  Juss." 

This  collection  consisting  of  a  few  leaves  I  have  not  named  because 

of  the  scanty  material.    It  is  a  4-septate  form  with  no  mycelial  setae, 

but  with  obtuse  perithecial  appendages  which  are  curved,  27-51  x  7/i, 

Perithecia  125-172/i  in  diameter.    Mycelium  quite  typical  in  the  manner 

in  which  the  threads  anastomose.    Capitate  hyphopodia  alternate,  head 

cell  nearly  globular.    Mucronate  hyphopodia  opposite  or  alternate,  neck 

long,  narrow.     Spores  4-septate,  41  x  17/i,  obtuse. 

M.  cookenana,  Speg.  Specimens  on  Lippia,  Stachytarpheta  and 
Lantana,  bearing  this  name  are  in  the  New  York  Garden  collections. 
The  determination  on  Lantana  is  evidently  erroneous.  The  other  speci- 
mens have  not  been  examined. 


66 


ILLINOIS  BIOLOGICAL  MONOGRAPHS 


[534 


HOST   LIST 
Arranged  by  Families 


Polypodiaceae 

Adiantum  latifolium 

Adiantum  sp. 
Sehizaeaceae 

Aneimia  adiantifolia 

Aneimia  sp. 
Gramineae 

Andropogon  bicomis 

AndropogoD  leucostachyns 

Paspalum  schreberianum 

Paspalum  gliitinosum 

Panicum  glutinosum 

Lasiacis  swartziana 

Lasiacis  compacta 

Lasiacis  divaricata 

Ichnanthus  pallens 

Oplisinenus  setarius 

Olyra  latifolia 

Stenotaphrum  secundatum 

Chloris  petraea 


M.  pteridicola 
M.  pteridicola 

M.  pteridicola 
M.  pteridicola 
M.  panici 
M.  panici 
M.  panici 
M.  panici 
M.  panici 
M.  panici 
M.  panici 
M,  panici 
M.  panici 
M.  panici 
M.  panici 
M  .panici 
M.  stenotaphri 
M.  panici 


Six  other  species  have  been  reported  upon  Graminae  as  follows: 
M.  bambusae,  M.  herculeus,  M.  arundinis,  M.  amphitricha,  M.  furcata, 
M.  substenospora. 
Cyperaceae 

Mariscus  jamaieensis  M.  cyperi 

Mariscus  jamaieensis  M.  circinans 

Rhynchospora  aurea  M.  circinans 

Cyperus  sp.  M.  cyperi 

Scleria  sp.  M.  C3T)eri 

Those  previously  reported  upon  the  Cyperaceae  are :    M.  circinans, 
M.  intricata,  M.  amphitricha,  M.  argentina,  M.  uleana,  M.  cyperi-uleana, 
and  M.  cyperi-italica. 
Palmae 

Macrodiscus  lactiflorus  M.  furcata 

Acrista  monticola  M.  furcata 

Thrinax  ponceana  M.  furcata 

Thrinax  praeceps  M.  furcata 

Coccothrinax  alta  M.  furcata 


535]  MELIOLA  IN  PORTO  RICO  — STEVENS  67 

Roystonea  borinquena  M.  denticulata 

Previously  reported  on  the  Palmae:  M.  iquitosensis,  M.  manaosen- 
sis,  M,  palmieola,  M.  amphitricha,  M.  contigua,  M.  furcata,  M.  hyalospora. 
Araceae 

Philodendron  krebsii  M.  philodendri 

Dieffenbachia  seguine  M.  dieffenbaehiae 

Liliaceae 

Srailax  coriacea  M.  smilacis 

Three  other  species  are  reported  on  the  Liliaceae,  viz.,  M.  hyalo- 
spora, M.  subdentata,  M.  dracaenicola. 
Piperaceae 

Piper  medium  M,  tortuosa 

Piper  adunctum  M,  glabroides,  M.  piperis,  and 

M,  gaillardiana 

Piper  peltatum  M.  tortuosa 

Piper  umbellatum  M.  tortuosa 

Piper  hispidum  M.  contorta 

Piper  blattarum  M.  paucipes 

The  species  previously  known  upon  Piper  are:    M.  stenospora,  M. 
asterinoides,  M.  patouillardi,  M.  pululahuensis,  M,  furcata,  M.  tortuosa, 
M.  piperis,  and  M.  glabra. 
Myricaceae 

Myrica  cerifera  M.  manca 

Urticaceae 

Pilea  parietaria  M.  earlii  and  M.  triloba 

Pilea  nummularifolia  M.  earlii 

Pilea  sp.  M.  earlii 

M.  thomasiana  has  also  been  reported  upon  the  Urticaceae. 
Polygonaceae 

Coccolobis  pyrifolia  M.  praetervisa 

Coecolobis  sentenisii  M.  praetervisa 

Coccolobis  laurifolia  M.  rectangularis 

Coccolobis  sps.  M.  praetervisa 

Magnoliaceae 

Magnolia  portoricensis  M.  magnoliae 

M.  amphitricha  and  M.  piptochaeta  have  previously  been  reported 
upon  this  family. 
Anonaceae 

Anona  montana  M,  longipoda 

M.  uvariae  has  been  reported  upon  this  family. 
Lauraceae 

Persea  gratissima  M.  perseae 


68 


ILLINOIS  BIOLOGICAL  MONOGRAPHS 


[536 


Ocotea  leucoxylon  '  M.  ocoteae  and 

M.  ocoteicola 
Nectandra  patens  ''  M.  glabroides 

The  following  species  have  heretofore  been  reported  upon  the  Lau- 
raceae :    M.  calva,  M.  ziz-zag,  M.  praetervisa,  M.  martiniana,  M.  penicil- 


lata,  M.  anomala,  M,  manea,  M.  an 

aphitricha,  M.  acutiseta. 

Rosaceae 

Rubus  sp. 

M,  puiggarii 

Leguminosae 

Inga  laurina 

M.  toruloidea 

Mimosa  ceratonia 

M.  bicornis 

Lonehocarpus  glaucifolius 

M.  bicornis 

Cassia  quinquadrangulata 

M.  toruloidea 

Clitoria  rubiginosa  ( ?) 

M.  sp.  ind. 

•    Meibomia  axillaris 

M.  bicornis 

Meibomia  adscendens 

M.  bicornis 

Meibomia  supina 

M.  bicornis 

Dalbergia  monetaria 

M.  bicornis 

Dalbergia  sps. 

M.  bicornis 

Andira  jamaicensis 

M.  andirae 

Bradburya  virginiana 

M.  bicornis 

Erythrina  micropteryx 

M.  bicornis                            » 

Teramnus  uncinatus 

M.  bicornis 

Rudolphia  volubilis 

M.  rudolphiae 

Calopogonium  orthocarpum 

M.  bicornis  var.  ealopogonii 

Galaetia  dubia 

M.  bicornis  var.  galactiae 

Dolicholus  reticulatus 

M.  bicornis 

Chamaecrista  granulata 

M.  chamaecristicola 

Chamaecrista  ' '  glandulosa ' ' 

M.  chamaeeristae 

The  following  species  of  Meliola  have  been  reported  upon  the  Legu 
minosae:  M.  desmodii,  M.  ludibunda,  M.  malacotricha,  M.  bicornis, 
M.  juruana,  M.  chamaeeristae,  M.  denticulata,  M,  harioti,  M.  pellucida, 
M.  zollingeri,  M,  andirae,  M.  gleditschiae,  M.  musae,  M.  pazschkeana, 
M.  pseudoanastomosans,  M.  subtorulosa,  M.  tamarindi. 
Rutaceae 

Pilocarpus  racemosus  M,  pilocarpi 

Amyris  elemifera  M.  monensis 

In  addition  to  the  species  mentioned  above,  the  following  have  been 
reported  upon  the  Rutuceae:  M.  obesa,  M.  evodiae,  M.  obesula,  M. 
tenella,  M.  microtheca,  M.  butleri,  M.  amphitricha,  M.  patens,  M.  ludi- 
bunda. 


537]  MELIOLA  IN  PORTO  RICO  — STEVENS  69 

Simarubaceae 

Simaruba  tulae  M.  glabroides 

Meliaceae 

Guarea  trichilioides  M.  guareae  and  M.  giiareicola 

Other  species  described  upon  the  Meliaceae  are :    M,  macalpini,  M. 
sandarici,  M.  opposita,  M.  parvula. 
Malpighiaceae 

Banisteria  laurifolia  M.  rectangularis 

Byrsonima  lucida  M.  byrsonimae 

Two  other  species  have  been    reported    upon    the    Malpighiaceae, 
namely,  M.  stuhlmanniana  and  M.  crenata. 
Euphorbiaceae 

Drypetes  sps.  M.  glabra 

Acalypha  bisetosa  M.  arecibensis 

Jatropha  hernandifolia  M.  jatrophae 

Gymnanthes  lucida  M.  gymnanthicola 

Other  forms  reported  upon  the  Euphorbiaceae  are:    M.  malacotri- 
cha,  M.  patella,  M.  verrucosa,  M.  acalyphae,  M.  manihoticola,  M.  comu- 
caprae. 
Anacardiaceae 

Mangifera  indica  M.  mangiferae 

Spondias  mombin  M.  comocladiae 

Comocladia  glabra  M.  comocladiae 

The  following  species  have  been  reported  upon  the  Anacardiaceae : 
M.  rhois,  M.  guercinopsis,  M.  malacotricha,  M.  lanigera,  M.  irradians, 
M.  mangiferae,  M.  polytricha,  M,  anacardii,  M.  genieulata,  M.  coronata, 
M.  dracontomeli. 
Aquifoliaceae 

Ilex  nitida  M.  raaricaensis 

Other  species  reported  upon  the  Aquefoliaceae  are:    M.  ilicis,  M. 
lagersheiraii,  M.  cornuta,  M.  yerbae. 
Celastraceae 

Crossopetalum  pallens  M.  compacta 

Species  previously  reported  upon  the  Celastraceae  are :    M,  falcati- 
seta  and  M.  gymnosporiae. 
Staphylaceae  : 

Turpinia  panniculata  M,  guignardi 

Sapindaceae 

Serjania  polyphylla  M.  serjaniae 

PauUinia  pinnata  M.  hessii  and 

M.  pauUiniae 

Thouinia  striata  M.  thouiniae 


70 


ILLINOIS  BIOLOGICAL  MONOGRAPtIS 


[538 


Allophylus  crassinervis  M.  thouiniae 

Cupania  araericana  M.  cupaniae  and  M.  praetervisa 

Cupania  sps.  M.  cupaniae 

Hypelate  trifoliate  M.  glabra 

Following  is  a  list  of  the  species  previously  reported  upon  the  Sapin- 
daceae:     M.  wrightii,  M,  parenchymata,  M.  sapindacearum,  M.  cruci- 
fera,  M.  ambigua,  M.  thouiniae,  M.  araneosa,  M.  bombphlandi. 
Rhamnaceae 

Krugiodendron  ferreum  M.  thouineae 

Gouania  lupuloides  M.  tenuissima 

Previously  reported  upon  the  Rhamnaceae,  M.  scutiae. 
Vitaceae 

Cissus  sicyoides  M,  merrillii 

One    other   species    is   reported    upon    the    Vitaceae,    namely,    M. 
paracusis. 
Tiliaceae 

Triumfetta  semitriloba  M.  triumfettae 

Malvaceae 

Sida  urens  M.  molleriana  • 

Hibiscus  tiliaeeus  M.  triumfettae 

Two  species  have  been  reported  upon  the  Malvaceae,  viz.,  M.  mol- 
leriana and  M.  siflae. 
Ochnaceae 

Sauvagesia  erecta 
Guttiferae 

Calophyllum  calaba 

Mammea  americana 

Clusia  minor 
Winteranaceae 

Winterana  canella 
Flacourtiaceae 

Casearia  ramiflora 

Casearia  sylvestris 

Casearia  arborea 

Casearia  aculeata 

Casearia  sp. 
Cambretaceae 

Laguncularia  racemosa 


M.  glabroides 

iM.  calophylli 
M.  pauUiniae 
M.  clusiae 

M.  thouiniae 

M.  pauUini'ie 
M.  pauUiniae 
M.  pauUiniae 
M.  pauUiniae 
M.  pauUiniae 

M.  lagunculariae  and  M.  nigra 


Only  one  species  had  heretofore  been  reported  upon  this  family. 
Myrtaceae 

Amomis  caryophyllata  M.  amomicola 

Psidium  guajava  M.  psidii 


539]  MELIOLA  IM  PORTO  RICO  — STEVENS  71 

Myrcia  deflexa  M.  helleri 

Myrcia  splendens  M.  helleri 

Eugenia  stahlii  M.  helleri 

Eugenia  monticola  M.  helleri 

The  following  have  been  recorded  upon  the  Myrtaceae :    M.  psidii, 

M.  helleri,  M,  puchella,  M,  arborescens,  M.  laxa,  M.  densa,  M.  horrida, 

M.  cladotricha,  M.  elavispora,  M,  valdivivensis. 

Melastomataceae 

Mieonia  laevigata  M.  melastomacearum 

Miconia  racemosa  M.  melastomacearum 

Mieonia  sentenisii  M.  mieonieicola 

Miconia  prasina  M.  miconiae 

Clidemia  hirta  M.  melastomacearum 

Clidemia  strigillosa  M.  melastomacearum 

Species  other  than  the  above  which  have  been  reported  upon  the 

Melastomataceae  are :    M.  heudeloti,  M.  weigettii,  M.  memecyli,  M.  affinis. 

Araliaceae 

Dendropanax  arboreum  M.  didymopanicis 

Dendropanax  laurifolium  M.  didymopanicis 

Other  species  on  the  Araliaceae  are :    M.  araliae,  M.  dichotoma,  M. 

kusanoi,  M,  heterosetae,  M.  pectinata,  M.  leplidae. 

Myrsinaceae 

Ardisia  guadalupensis  M.  myrsiniacearum 

Parathesis  serrulata  M.  parathesicola 

The  following  species  have  been  reported  upon  the  Myrsinaceae: 

M.  cladotricha,  M.  quercinopsis,  M.  delicatula,  M.  armata,  M.  groteana, 

M.  perigrina,  M.  maesae. 

Sapotaceae 

Lucuma  multiflora  M.  lucumae 

Dipholis  salicifolia  M.  dipholidis 

Chrysophyllum  sp.  M.  ocoteicola 

M.  brasiliensis  is  the  species  previously  reported  on  the  Sapotaceae. 

Oleaceae  M.  raayepeae 

Mayepea  domingensis  M.  mayepeicola 

M,  jasminicola  has  been  reported  on  this  family. 

Apocynaceae 

Plumiera  krugii  M.  tabernaemontanae 

Tabernaemontana  oppositifolia  M.  tabernaemontanae 

Rauwolfia  nitida  M.  tabernaemontanae 

Forsteronia  corymbosa  M.  tabernaemontanae  var.  for- 

steroniae 


72  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [540 

Other  species  previously  recorded  upon  the  Apocynaceae  are:    M. 
levipoda,  ]\I.  simillima,  M.  intermedia,  M.  willoughbyae,  M.  clavitispora, 
M.  compositarum,  M.  membranacea,  M.  laevigata. 
Convolvulaceae 

Ipomoea  cathartica  M.  clavulata,  M.  ipomoeae,  and 

M.  quadrispina 

Ipomoea  tiliacea  M.  clavulata  and  M.  ipomoeae 

Ipomoea  batatas  M.  clavulata 

Ipomoea  sps.  M.  clavulata  and  M.  ipomoeae 

Other  species  recorded  for  this  family  are:    M.  decidua,  M.  ambi- 
gua,  M.  melacotricha,  M.  ipomoeaephile,  M.  merremiae,  M.  franceville- 
ana,  M.  caymanensis,  M.  hewittiae. 
Borraginaceae 

Cordia  nitida  M.  longipoda 

Cordia  sps.  M.  longipoda 

Tournefortia  hirsutissima  M.  longipoda 

Varronia  sps.  M.  molleriana 

In  addition  to  the  above,  M.  usteriana  has  been  reported  upon  the 
Borraginaceae. 
Verbenaceae 

Stachytarpheta  cayennensis  M.  glabroides 

Lantana  odorata  M.  ambigua. 

Lantana  camara  M.  ambigua 

Lantana  sps.  M.  ambigua 

Lantana  sps,  M.  cookeana  (?) 

Avicennia  nitida  M.  sepulta 

Other  species  recorded  on  the  Verbenaceae  are:    M.  durantae,  M. 
sakawensis,  M,  caUicarpae,  M.  clerodendricola,  M.  amphitricha,  M.  lip- 
piae,  M.  coronata,  M.  vitis,  M.  lantanae. 
Labiatae 

Hyptis  lantanifolia  M.  hj-ptidicola 

H3T)tis  capitata  M.  hyptidicola 

Hyptis  pectinata  M.  hyptidicola 

Hyptis  sp.  M.  hyptidicola 

Other  species  recorded  on  the  Labiateae  are:    M.  anastomosans,  M. 
inermis,  M.  pelliculosa,  M.  hyptidis. 
Solanaceae 

Solanum  rugosum  M.  glabroides 

Solanum  persicifolium  M.  glabroides 

Solanum  jamaicense  M.  solani 

Capsicum  baccatum  M.  capsicola 

Oestrum  laurifolium  M.  gesneriae 

Oestrum  macrophyllum  M.  gesneriae 


541] 


MELIOLA  IN  PORTO  RICO  — STEVENS 


73 


Other  species  on  the  Solanaeeae  are:     M.  winteri,  M.  plebeja,  M. 
glabra,  M.  solanicola  Gaill.,  M.  acervata,  M.  solanieola  P.  Henn. 
Bignoniaceae 

Macrodiscus  lactiflonis  M,  furcata 

Tecoma  pentaphylla  M.  tecomae  and  M.  bidentata 

Tecoma  sps.  M.  tecomae 

Tabebuia  haemantha  M.  bidentata 

Schlegelia  sps.  M.  glabroides  var.  schlegeliae 

Species    previously    recorded    upon    the    Bignoniaceae    are:    M. 
arachnoidea,  M.  bidentata,  M.  furcata,  M.  harioti,  M.  lanceolato-setosa. 
Gesneriaceae 


Gesneria  albiflora 
Acanthaceae 

Hygrophila  brasiliensis 
Rubiaceae 

Gonzalagunia  spicata 

Randia  aculeata 

Erithalis  fruticosa 

Chiococca  alba 

Guettarda  ovalifolia 
Palicourea  crocea 
Palicourea  riparia 
Palicourea  domingensis 

Palicourea  sps. 

Borreria  laevis 

Borreria  ocimoides 

Coccocypselum  repens 

Psychotria  pubescens 

Psychotria  grandis 

Psychotria  bertiana 

Psychotria  sp. 

Rubiaceae  indet. 

Other  species  on  the  Rubiaceae  are :  M.  intermedia,  M.  sandicensis, 
M.  longiseta,  M.  falcata,  M.  manca,  M.  rubicola,  M.  cryptocarpa,  M.  gla- 
bra, M.  palawanensis,  M.  pencilliformis,  M.  asterinoides,  M.  mitchelliae. 
Cucurbitaceae 

Cayaponia  (?)  M.  cucurbitaeearum 

Three  species,  none  of  them  with  forked  setae,  have  been  noted  upon 
the  Cucurbitaceae,  namely :    M.  triloba,  M.  malacotricha,  M,  aciculosa. 


M.  gesneriae 

M.  irregularis 

M.  psychotriae 

M.  psychotriae 

M.  psychotriae 

M.  chiococcae  and 

M.  psychotriae 

M.  psychotriae 

M.  mayaguesiana 

M.  mayaguesiana 

M.  mayaguesiana  and 

M.  glabra  var.  psychotriae 

M.  mayaguesiana  and 

M,  glabra  var.  psychotriae 

M.  psychotriae 

M.  psychotriae 

M.  glabra  var.  psychotriae 

M.  glabra  var.  psychotriae 

M.  glabra  var.  psychotriae 

M.  glabra  var.  psychotriae 

M.  glabra  var.  psychotriae 

M.  psychotriae 


74  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [542 

Compositae 

Pseudelephantopus  spicatus  M.  cyclopoda 

Eupatorium  odoratum  M.  compositarum 

Eupatorium  portoricense  M.  compositaruin  var.  portori- 

censis 
Species  previously  reported  upon  the  Compositae  are :    M.  sororcula, 

M.  spegazziniana,  M.  mikaniae,  M.  compositarum,  M.  inermia,  M.  am- 
phitricha,  M.  tortuosa. 

Host  unknown  M.  bidentata 

Host  unknown  M.  amphitriciia 

Host  unknown  M.  tuberculata 

Host  unknown  M.  paulliniae 

Host  unknown  M.  aibonitensis 

Host  unknown  M.  sp.  ind. 


543]  MELIOLA  IN  PORTO  RICO  — STEVENS  75 


EXPLANATION   OF   PLATES 

All  plates  are  from  photo-micrographs  made  by  Mr.  A.  G.  Eldredge. 
They  were  reduced  28%  in  reproduction.  The  abbreviations  l.p. 
and  h.p.  indicate  low  power  and  high  power  with  a  magnification  of  ap- 
proximately 75  and  355  diameters  respectively.  Scales  showing  the 
magnification  are  given  in  plate  V ;  the  smallest  divisions  are  10/a  wide. 


76  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [544 


EXPLANATION  OF  PLATE  I 

Fig.  I.    M.  puigiarii :    portion    of   perithecium    and    larvaeform    appendages,    h.p. 
No.  8270. 

Fig.  2.    M.  manca :  mycelium,  capitate  hyphopodia,  a  germinating  spore,    h.p.    No. 
1292  N.  A.  F. 

Fig.  3.    M.  guignardi :  general  type  of  colony,  mycelium  and  capitate  hyphopodia. 
No.  8922.    l.p. 

Fig.  4.    M.  glabra :  showing  type  of  mycelium  and  hyphopodia.    l.p.    Rabenhorst, 
Fung.  Europ.     Xo.  3849. 

Fig.  5.    M.  sepulta :  type  of  colony  and  mycelium,     l.p.     Heller's  collection.     No. 
6416. 

Fig.  6.    M.  irregularis :  spores  showing  irregularity  in  size  of  cells,    h.p.    No.  9283 
(type). 

Fig.  7.    M.  solani:  mycelium  showing  opposite  hyphopodia.    h.p.     No.  5750  (type). 

Fig.  8.    M.  hyptidicola :  a  showing  perithecia,  crooked  mycelium,  and  oval  hypho- 
podia.   l.p. 
b  mycelium  and  hyphopodia  in  greater  detail,    h.p.    No.  8526. 

Fig.  9.    M.  cyclopoda :  general  view  showing  colony,  rough  perithecia,  and  char- 
acter of  mycelium  and  hyphopodia.    l.p.     No.  7733  (type). 

Fig.  10.    M.  perseae :  irregular,  crooked  mycelium,  mucronate  hj-phopodia  and  an- 
gular capitate  hyphopodia.    h.p.    No.  8212  (tjrpe). 

Fig.  II.    M.  longipoda:  mycelium,  capitate  and  mucronate  hyphopodia,  ascospores 
and  a  young  perithecium.    h.p.    No.  9329. 


545] 


MELIOLA  IN  PORTO  RICO-STEVENS  77 


PLATE  II 


78  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [546 


EXPLANATION  OF  PLATE  II 

Fig.  12.  M.  melastomacearum :  perithecia,  mycelium  and  hyphopodia.  l.p.  No. 
8956. 

Fig.  13.    M.  glabroides :  germinating  spore  with  hyphopodia.    h.p.    No.  3371  (type). 

Fig.  14.  M.  triloba :  spore  and  young  mycelium  with  typically  lobed  capitate  hy- 
phopodia.   h.p.    No.  1038. 

Fig.  15.  M.  compositarum :  colony  showing  perithecium  wit^  larvaeform  append- 
age, mycelium  and  hyphopodia.     l.p.     Heller,  No.  6185    (co-type). 

Fig.  16.  M.  compositarum  var.  portoricensis :  showing  mycelium  and  capitate  hy- 
phopodia.    h.p.     No.  7723. 

Fig.  17.     M.  calophylli:  irregular  mycelium  and  head  cells,     h.p.     No.  7059  (type). 

Fig.  18.     M.  arecibensis :  mycelium  and  crowded  hyphopodia.     h.p.    No.  365a  (type). 

Fig.  19.  M.  miconieicola :  loose,  scant  mycelium  with  distant  hyphopodia.  l.p. 
No.  8639  (type). 

Fig.  20.     M.  parathesicola :  capitate  hyphopodia  very  crowded,    h.p.     No.  7286. 

Fig.  21.  M.  toruloidea :  perithecia,  young  and  old,  mycelium  and  hyphopodia. 
l.p.    No.  8394  (type).    A  few  setae  are  visible  on  the  perithecia. 

Fig.  22.  M.  comocladiae :  colony  showing  character  of  mycelium  and  hyphopodia. 
l.p.     No.  9015   (type). 


547]  MELIOLA  IN  PORTO  RICO  — STEVENS  79 


PLAVE  III 


80  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [548 


EXPLANATION  OF  PLATE  III 

Fig.  23.     M.   tortuosa :   perithecium  and  appendages,  with  tortuose  tips.     l.p.     No. 

4714. 
Fig.  24.     M.  chamaecristicola :    showing    thin    setae    on    perithecia.     l.p.     No.  61 13 

(type). 
Fig.  25.     M.  rectangularis :  showing  right-angle  type  of  branching,     h.p.     No.  7292 

(type). 
Fig.  26.     M.  chiococcae :    mycelium,    angular    hyphopodia,   young   perithecium   with 

radiating  mycelium,     h.p.     No.  7743   (type). 
Fig.  2J.     M.   pteridicola :    showing  parallel   coursing  of   mycelium,    l.p.     No.   7814 

(type). 
Fig.  28.     M.  cupaniap :  showing  perithecia!  setae,     l.p.     No.  9143  (type). 
Fig.  29.     M.  miconiae :  general  habit  of  mycelium,     l.p.     No.  9366. 
Fog.  30.    M.   contorta :   perithecia   and   crooked   perithecial   setae,     l.p.     No.   8225 

(type). 
Fig.  31.     M.  mayaguesiana :    ascospore,  mycelium    and    capitate    hyphopodia.     h.p. 

No.  7157   (type). 
Fig.  ^2.    M.  clavulata:  swollen  setal  tips.    h.p.    No.  7837. 
Fig-  Zi-     ^I-  praetervisa :  spore  and  mycelium  showing  characteristic  conic  capitate 

hyphopodia.    h.p.    No.  5653a. 


;:,-*,   «-«JU    T'' 


dOQES. 


J-  ?xi.' 


549]  MELIOLA  IN  PORTO  RICO  — STEVENS  81 


PLATE  IV 


82 


ILLINOIS  BIOLOGICAL  MONOGRAPHS 


[550 


EXPLANATION  OF  PLATE  IV 

Fig.  34.     M.  andirae :   a  spore,  mycelium   showing  characteristic   opposite  capitate 

hyphopodia.     h.p.     Earle   (co-type).     No.  6448. 
Fig.  35.     M.  monensis :   showing  typical   hyphopodia.     h.p.     No.  6158    (type). 
Fig.  36.     M.  thouiniae :  capitate  and  mucronate  hyphopodia.     h.p.     Heller,  l\o.  6435 

(type). 
Fig.  37.     M.  amomicola:  typical  opposite  hyphopodia.     h.p.     No.  7054   (type). 
Fig.  38.     M.  stenotaphri :  crooked  mycelium,  long  setae,     l.p.    No.  8023. 
Fig.  39.     M.  capsicola :   showing  irregular   hyphopodia.     l.p.     No.  8019    (type). 
Fig.  40.     M.  paucipes :   distant  hyphopodia  and  long,  black   setae,     l.p.     No.   7463 

(type>. 
Fig.  41.     M.  rudolphiae:  mycelium,  capitate  hyphopodia  and  a  spore,    h.p.  No.  8698. 
Fig.  42.     M.  serjaniae :  alternate  capitate  and  opposite  mucronate  hyphopodia.    h.p. 

No.  425  (type). 
Fig.  43.     M.  ocoteicola :  characteristic  capitate  hyphopodia.     h.p.     No.  7560  (type). 
Fig.  44.     M.  polytricha   K.  &  C. :    edge  of  colony  showing  habit.     "No.   1262  on 

Cunonia  capensis.   Grahamstown,  Cape,  ex  Kalchbrenner."  h.p.  (type). 


\ 


^     z:^ 


551]  MELIOLA  IN  PORTO  RICO  — STEVENS  83 


PLATE  V 


84  ILLINOIS  BIOLOGICAL  MONOGRAPHS  [552 


EXPLANATION  OF  PLATE  V 

Fig.  45.     M.  earlii:  colony  showing  mycelial  character,     l.p.     No.  7685   (type). 

Fig.  46.     M.  mayepeae :  general  character  of  colony,    l.p.     No.  7468  (type). 

Fig.  47.     M.  lucumae :  mycelium  and  capitate  hyphopodia,  young  perithecium.     l.p. 

No.  8164  (type). 
Fig.  48.     M.  tecomae:  showing  curved  tips  of  setae,     h.p.     No.  9332  (type). 
Fig.  49.     M.   ipomoeae :   colony,   mycelium,  opposite   hyphopodia,   long  setae,  peri- 

thecia.      l.p.     No.  6563. 
Fig.  50.     M.  magnoliae :  seta!  tip  showing  forking,     h.p.     No.  4738  (type). 
Fig.  51.     M.  cucurbitacearum :  showing  forking  of  setal  tips.    h.p.    No.  8732  (type). 
Fig.  52.     M.  hessii :  a  setum  showing  character  of  forking,  a  bit  of  mycelium,     l.p. 

No.  9367  (type). 
Fig.  53.     M.  quadris'pina :  general  type  of  colony,     l.p.     No.  8163. 
Fig.  54.     M.  philodendri :  primary  branching  of  setal  tip.     h.p.     No.  4346. 
Fig.  55.     M.  gaillardiana :  crested  setum.     h.p.     No.  7794  (type). 
Fig.  56.     M.  dieffenbachiae :  setal  tip.     h.p.     No.  8148  (type). 
Fig.  57.     M.    bicornis,    "authentic    specimen"    from    Kew    gardens    determined    by 

Winter :  spore,  mycelium  and  capitate  and  mucronate  hyphopodia.   h.p. 
Fig.  h.p.  millimeter  scale  ruled  to  i/io  mm.  high  power. 
Fig.  l.p.  ditto  with  low  power  magnification. 


^  1 


553] 


MELIOLA  IN  PORTO  RICO  — STEVENS 


85 


ALPHABETICAL   LIST   OF   SPECIES 


Meliola  aibonitensis,  i6 
ambigua,  50 
amomicola,  40 
amphitricha,  49 
andirae,  38 
araliae,  40 
arecibensis,  23 

bicornis,  62 

bicornis  var.  calopogonii,  64 
bicornis  var.  galactiae,  65 
bidentata,  62 
byrsonimae,  49 

calophylli,  22 

capsicola,  41 

chamaecristae,  47 

chamaecristicola,  26 

chiococcae,  27 

circinans,  33 

clavulata,  37 

clusiae,  52 

comocladiae,  25 

compacta,  30 

compositarum,  21 

compositarum  var.  portoricensis,  22. 

contorta,  32 

cookeana,  65 


Meliola  cucurbitacearum,  58 
cupaniae,  29 
cyclopoda,  16 
cyperi,  34 

denticulata,  57 
didymopanicis,  39 
dieffenbachiae,  62 
dipholidis,  44 

earlii,  47 

furcata,  58 

gaillardiana,  61 

gesneriae,  47 

glabra,  13 

glabra  var.  psychotriae,  14 

glabroides,  18 

glabroides  var.  schlegeliae,  20 

guareae,  55 

guareicola,  53 

guignardi,  12 

gymnanthicola,  49 

helleri,  56 
hessii,  59 
hyptidicola,  j6 


86 


INDEX 


[554 


Meliola  ipomoeae,  54 
irregularis,  15 

jatrophae,  48 

lagunculariae,  17 

longipoda,  17 
lucumae,  49 

magnoliae,  55 
manca,  11 
mangi ferae,  57 
maricaensis,  31 
mayaguesiana,  2^ 
mayepeae,  48 
mayepeicola,  51 
melastomacearum,  18 
merrillii,  61 
miconiae,  30 
miconieicola,  2^ 
moUeriana,  29 
monensis,  38 
myrsinacearum'  40 

nigra,  27 

octoeae,  29 
ocoteicola,  45 

panici,  42 
parethesicola,  24 
paucipes,  42 


Meliola  paulliniae,  45 
philodendri,  60 
pilocarpi,  41 
piperis,  59 
perseae,  17 
praetervisa,  38 
psidii,  36 
psychotriae,  51 
pteridicola,  28 
puiggarii,  11 

quadrispina,  60 

rectangularis,  2y 
rudolphiae,  43 

sepulta,  14 
serjaniae,  44 
smilacis,  56 
solani,   15 
sp.  indet.,  65 
stenotaphri,  41 

tabernaemontanae,  50 
tabernaemontanae  var.  f orsteroniae,  50 
tecomae,  53 
tenuissima,  24 
thouiniae,  39 
tortuosa,  26 
toruloidae,  25 
triloba,  20 
triumfettae,  30 
tuberculata,  23 


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